Answer: Genetic Engineering
Explanation:
C. "Barbie Doll" has a carefree tone and "What's That Smell in Your Kitchen" has a indifferent tone.
I would say C. at ten o'clock; modifies came. Adverb phrase always involves when, where, or how. In this sentence, you could ask when did the truck came? Then you adverb phrase would it came at ten o'clock.
I hope this helps!<span />
One place would be next to the word and the other would be at the beginning, where they explain the symbols.