Answer:
A. To help scientists plan an experiment in which no animal or humans are harmed
<span>The appropriate response to the question is parenchyma. The
parenchyma is the utilitarian parts of an organ in the body. This is as
opposed to the stroma, which alludes to the basic tissue of organs,
specifically, the connective tissues. It is a functional part of
animal's body.
</span>
The mitochondria converts chemical energy stored in food into usable energy.
