The answer is stem. i just had this question on odyssey.
Answer:
A
Explanation:
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches.
A car with an initial velocity of 25 m/s speeds up to 40 m/s over a period of 15 seconds. The average acceleration of the car is 1 m/sec/sec. It changed 15 m/sec in 15 seconds.
The answer that best completes the statement above is 30-60 seconds. This is the rest interval needed in between sets for hypertrophy training. The purpose of this rest interval is to optimize the anabolic hormone response. So basically, this hypertrophy training aims in growing the muscles faster with great efficacy.
In my opinion the answer would be A.