Question

1. what revision, if any, should be made in sentence 28?

it also served as a precursor to a still - active organization that was formed in 1946 to replace the league, the united nations.

a still - active organization that was formed in 1946 to replace the league is what is now the united nations as a precursor.

as a precursor to the united nations, a still - active organization that was formed in 1946 to replace the league, it also served.

no change is needed.

clear all

Explanation:

To determine the correct revision, we analyze the clarity and logical flow of each option. The original - like structure of the first option (when considering the context, likely the intended correct one) presents the information clearly: it explains that the subject (implied from context, maybe the League of Nations) served as a precursor to the United Nations, which is a still - active organization formed in 1946 to replace the league. The second option has a convoluted structure ("A still - active organization... is what is now the United Nations as a precursor") which is confusing. The third option has a misplaced modifier and an unclear structure. So the first option is the most clear and correct, meaning no change is not needed (wait, no - the first option is a revision? Wait, no, the question is "What revision, if any, should be made in sentence 28?". Wait, actually, the first option is a well - structured sentence. Let's re - evaluate:

Wait, the first option: "It also served as a precursor to a still - active organization that was formed in 1946 to replace the league, the United Nations." This is a clear sentence. The other options are either structurally flawed (second: illogical structure; third: misplaced modifier and unclear). So the correct revision is the first option. Wait, but the options are:

Option 1: The first radio button option (the first one) is the correct revision. Wait, no, the "No change is needed" is an option. Wait, maybe I messed up. Wait, let's check again.

Wait, the original sentence (not shown, but from the options) - the first option is a clear and correct sentence. The second option is confusing in its structure ("A still - active organization... is what is now the United Nations as a precursor" - the "as a precursor" is misplaced). The third option has a dangling modifier ("As a precursor to the United Nations, a still - active organization... , it also served" - the "it" is unclear and the modifier is misplaced). So the first option is the correct revision, so the answer is the first option.

Answer:

The first option: It also served as a precursor to a still - active organization that was formed in 1946 to replace the league, the United Nations.