Answer:
The researcher conducted experiments by using the scientific method.
Explanation:
It makes a little sense considering that the question did not elaborate further.
Varied Sentence Structure. Sentence structure is how you arrange your words, phrases, and clauses in a sentence. Writers who don’t vary their sentences repeat the same sentence subject, length, and type. This repetition bores the reader, and it weakens your voice. Varied sentences give your writing life.
Out of your 3 possible answers, B. ones' is the correct one and I will explain why. Answer A is a contraction of one and is. When you put "one is" into the blank space you can tell that it is not right. Answer C is incorrect because when you place an apostrophe after an s it is implied that there should be another s that follows and so you do not need to put it there. This means that answer B is correct since it doesn't have the extra s.
You should cover Let her go or dear Maria