You're given an essay-writing booklet in which to write your essays; the actual test booklet includes some blank space to plan your essays. If I can look at sequences of proteins, if I could look at what's going on with the DNA, I like looking at that, because that doesn't, that allows you to not be tricked by the convergent morphology or far apart things, like bats and birds or dolphins and fish.
You must write an essay on each of the three essay topics; you have no alternative choices. So even though you have the same or similar protein, we call them all cytochrome c, the sequence might be slightly different when you go from one species of vertebrate to another. So this has the most differences.
Therefore, these two essays are classified as "argument" essays.
So I would say that these are fairly closely related. They shouldn't have too many differences in the sequence of cytochrome c. So I'll provide the reasoning. Or you can say, has the largest. There's 18 differences. They actually came from different ancestors, but then their ancestors, because they had similar environments, had a convergent parts, I guess you could say.
The basic writing format of presenting an introduction, body, and conclusion is helpful, but to achieve a high score, you must demonstrate depth of thought. This includes an extra 15 minutes exclusively for reading the passages for the synthesis essay.