so hard after all, is a great advance.\nwhat would most add to the completeness of these excerpt?\n○ an…

so hard after all, is a great advance.\nwhat would most add to the completeness of these excerpt?\n○ an explanation of why sitting correctly is so important\n○ an explanation of how to achieve the correct sitting position\n○ an explanation of how to pedal while sitting correctly\n○ an explanation of why sitting in the correct position is elegant

so hard after all, is a great advance.\nwhat would most add to the completeness of these excerpt?\n○ an explanation of why sitting correctly is so important\n○ an explanation of how to achieve the correct sitting position\n○ an explanation of how to pedal while sitting correctly\n○ an explanation of why sitting in the correct position is elegant

Answer

Brief Explanations:

The excerpt seems to be about sitting correctly. Knowing how to achieve the correct sitting position would add most to its completeness as it directly relates to the main - topic of sitting correctly. Other options like why it's important, how to pedal while sitting correctly, or why it's elegant are secondary aspects compared to the fundamental how - to.

Answer:

an explanation of how to achieve the correct sitting position