True breeding is when nature had to do with the breeding and Mendel didn't interfere with the breeding of the plants to get a certain offspring
♥ They make use of a control group because its something that they can look into, something to compare to. <span />
I think B is the correct answer. Answer choices C & D are about dolphins, but they do not have anything related to negative effects surrounding human and dolphin interaction. A, on the other hand, may seem like a good choice, but then again, the answer is too vague.
Answer:
Hi how are you doing today Jasmine