30 michael needs a more effective controlling idea for his paper. which sentence should replace sentence 5…

30 michael needs a more effective controlling idea for his paper. which sentence should replace sentence 5 to best accomplish this goal? a referred to as the mariana trench, it has been explored for signs of life just like some planets have been. b very few humans have actually seen this huge depression in the ocean floor that is called the mariana trench. c this steep depression in the ocean floor is a unique environment known as the mariana trench. d deep in the ocean, the mariana trench supports some life even though it is cold, dark, and under very high pressure.

30 michael needs a more effective controlling idea for his paper. which sentence should replace sentence 5 to best accomplish this goal? a referred to as the mariana trench, it has been explored for signs of life just like some planets have been. b very few humans have actually seen this huge depression in the ocean floor that is called the mariana trench. c this steep depression in the ocean floor is a unique environment known as the mariana trench. d deep in the ocean, the mariana trench supports some life even though it is cold, dark, and under very high pressure.

Answer

Brief Explanations:

A controlling idea should introduce a key concept and set the tone for the paper. Option D not only identifies the Mariana Trench but also highlights its unique characteristic of supporting life under extreme conditions, which can drive the content of the paper. Options A - C focus more on exploration, visibility, or general description rather than a strong central - idea for the paper.

Answer:

D. Deep in the ocean, the Mariana Trench supports some life even though it is cold, dark, and under very high pressure.