Answer:
C. implement
By implementing a design or objective, purpose and goal is met.
The answer is D
The nitrogen bases adenine, thymine, cytosine and guanine code for the amino acid sequence in the protein
Yes, it is okay. you should never change your hypothesis if it was wrong.
Stratovolcanoes seems to fit, but I do not know what the list of answer choices is. Hope this if helpful :)