By a vote of four to one, the Federal Communications Commission increa

The correct answer here is E. This question, like many SC questions, has two flashpoints from which we can eliminate the four wrong answers.

Options B, D - The first thing to note is the meaning being conveyed by the sentence. This sentence talks about restrictions, about how many TV stations an individual/company is allowed to own, and NOT how many TV stations it theoretically could own. Hence, the use of 'could' here is incorrect (This is a pretty pedantic rule to be honest, and is very similar to the "May/Can i go to the bathroom" problem). OUT

Options A, C - The concept being tested once we identify the intended meaning is parallelism. What we can identify from the non-underlined portion of the sentence is that the FCC did two things together; they increased blablabla.... and removed blablabla..... These two actions should take on the same tense. However, A is in the infinitive instead, and C uses the noun form rather than an action. Hence, A & C are OUT.

This leaves E as the correct answer, as it follows parallelism and expresses the meaning correctly.

- Matoo