Which of the following sentences includes a transition that would work well in a comparison essay?

a.
fish are dying because oxygen levels in the lake are too low.

b.
democrats place a great emphasis on freedom; as well, republicans highly value individual freedom.

c.
an insect's body is composed of a head, a thorax, and an abdomen.

d.
personal computers generally have their memories measured in megabytes.

B.

Democrats place a great emphasis on freedom; as well, Republicans highly value individual freedom.

Explanation:

In this answer, you are comparing to groups: Republicans and Democrats. In the other options, only facts are stated.

the rocket launch by showing how the population around it changes its behavior as the earth's influence over the martian planet when he uses the term "green star".

explanation:

hello and welcome to the town of river dale. if you come to river-dale trust me you wouldn't want to leave.