There is no acquired traits, only those found in the DNA. Your DNA holds the capability, or lack thereof, when it comes to the chance of building muscles.
Answer:
It is relevant and sufficient, because she gives convincing examples of how phones support classwork.
If the underlined part of the sentence us <em>used today, </em>then the correct answer is D. adjective phrase.
It isn't a clause because there is no verb here, so it is an adjective phrase.