the commercial manufacturers promoted skateboarding through sanctioned competitions, they did little to…

the commercial manufacturers promoted skateboarding through sanctioned competitions, they did little to improve upon the original design, and by the mid - 60s, safety concerns stymied the rise of skateboarding. (11) while the sport failed to grab the general publics attention, there were still those who continued skateboarding despite the safety concerns. (12) they saw opportunities to improve the original design and create safer and more maneuverable boards. (13) one of those people was inventor richard stevenson. (14) he also replaced the common steel wheels with clay ones. (15) stevenson, however, did not stop there. (16) he also transformed skateboarding with his addition of the kicktail. (17) a kicktail is the curved section on the back of the board, which allows skateboards to fly. (18) with these improvements, they now had more control and could perform aerial stunts. (19) not satisfied with stevensons use of clay wheels, frank nasworthy stumbled upon the idea to use urethane wheels. (20) urethane is commonly found in the midsoles of athletic shoes. (21) nasworthys wheels allowed the skateboards to better grip surfaces and provided the additional benefit of more control. (22) both stevensons and nasworthys contributions in the 70s revolutionized skateboarding. (23) their contributions saved it from the brink of extinction and nipped it in the mainstream as municipalities became dotted with 5. april wants to add a supporting sentence to the third paragraph (sentences which sentence should be added after sentence 13? stevenson saw a way to improve skateboards. stevenson, however, was not the only inventor who significantly improved the design of skateboards. stevenson used his knowledge of shaping surfboards and applied it to shaping skateboards. stevenson witnessed surfers riding skateboards.

the commercial manufacturers promoted skateboarding through sanctioned competitions, they did little to improve upon the original design, and by the mid - 60s, safety concerns stymied the rise of skateboarding. (11) while the sport failed to grab the general publics attention, there were still those who continued skateboarding despite the safety concerns. (12) they saw opportunities to improve the original design and create safer and more maneuverable boards. (13) one of those people was inventor richard stevenson. (14) he also replaced the common steel wheels with clay ones. (15) stevenson, however, did not stop there. (16) he also transformed skateboarding with his addition of the kicktail. (17) a kicktail is the curved section on the back of the board, which allows skateboards to fly. (18) with these improvements, they now had more control and could perform aerial stunts. (19) not satisfied with stevensons use of clay wheels, frank nasworthy stumbled upon the idea to use urethane wheels. (20) urethane is commonly found in the midsoles of athletic shoes. (21) nasworthys wheels allowed the skateboards to better grip surfaces and provided the additional benefit of more control. (22) both stevensons and nasworthys contributions in the 70s revolutionized skateboarding. (23) their contributions saved it from the brink of extinction and nipped it in the mainstream as municipalities became dotted with 5. april wants to add a supporting sentence to the third paragraph (sentences which sentence should be added after sentence 13? stevenson saw a way to improve skateboards. stevenson, however, was not the only inventor who significantly improved the design of skateboards. stevenson used his knowledge of shaping surfboards and applied it to shaping skateboards. stevenson witnessed surfers riding skateboards.

Answer

Brief Explanations:

The third - paragraph focuses on Richard Stevenson's improvements to skateboards. Option C mentions how he applied his knowledge of shaping surfboards to skateboards, which is a relevant supporting detail about his design - improvement process.

Answer:

C. Stevenson used his knowledge of shaping surfboards and applied it to shaping skateboards.