7 elton would like to replace his current thesis. which of the following could replace sentence 4 and better…

7 elton would like to replace his current thesis. which of the following could replace sentence 4 and better express the thesis for this essay? (e2.9bi) a no wonder people and scientists look into the night sky and ask questions about life on this red and cold planet. b yet, years of research have led scientists to confirm that mars does indeed have water that may support some kind of life. c to find life on mars, nasa has spent millions of dollars and years of research, sending unpiloted space vehicles into the skies to find out what they can. d no change is needed for sentence 4.
Answer
Brief Explanations:
A good thesis statement for an essay about life on Mars should summarize the main idea. Option B directly states the significant finding that Mars has water which may support life, making it a strong thesis - like statement. Option A is more of a general wonderment, Option C focuses on NASA's efforts rather than the main idea about life on Mars, and without knowing sentence 4, we assume there is a better option.
Answer:
B. Yet, years of research have led scientists to confirm that Mars does indeed have water that may support some kind of life.