Somebody please help me with this problem . I do not get it

The correct answer is A. How much energy does it take a bee to fly for 10 seconds?

Explanation:

When you make an observation you use a concise statement to describe a natural phenomenon you closely observed or measured. In the case presented the observations focus on the movement and size of the bee's wings.

According to this, an adequate question based on these observations need to focus on the movement and size of the bee's wings or the general mechanism they use to fly, thus, the best option, in this case, is "How much energy does it take a bee to fly for 10 seconds?" because this derives from the observations and focuses on the same phenomenon. Also, the fact bees have small wings and move them fast suggests it requires a lot of energy for bees to fly, which is exactly the key point in the question.

"do a testcross with a homozygous recessive plant."

the answer is d.) homologous; have mammary glands