D. Make sure it suits your audience
I think the answer is D.) To fly
I searched what infinitive means and this is what I got.
Answer: It is D, or maybe im wrong
Writers have to give specific examples and explain about the main idea so they get the point of the story
Answer:
Constructing a hypothesis, test with an experiment, do background research are all steps of a scientific method which includes prediction.
Hope this helps :D ;-))
