I believe it's B, Sentence 2, but I'm not sure. There is a past tense verb, took; a present tense verb, mixes; and a past tense verb, pounded.
It iuses imagery to express a desire for the melding of the natural world (mammals, pure water, clear sky) with the artificial (cybernetic, computers, programming) in "harmony".
C) Were my grandfather alive, he would be so proud of me today
Due to the usage past tense (tenses must match)
Hope this helps:)
