1. In 1952, Dwight Eisenhower was elected President of the United States, he won 55% of the vote.

Answer: D

Explanation:

Winning is the best version to convey the intended meaning.

Using "winning" effectively conveys the simultaneous action of Eisenhower being elected and achieving a majority of the vote in a concise manner.

A) he won

This option is grammatically correct but creates a comma splice, as it improperly connects two independent clauses. The structure lacks fluidity and coherence, making it less effective than the correct option.

B) he had won

The use of "he had won" introduces a past perfect tense that is unnecessary in this context. It implies a sequence of events that is not relevant here, as both actions occurred simultaneously in 1952.

C) with winning

The phrase "with winning" is awkward and does not clearly connect the two ideas in the sentence. It lacks the necessary grammatical structure to convey the relationship between being elected and the percentage of votes received.

D) winning

This option is the most effective as it succinctly links the election and the percentage of votes achieved without creating any grammatical errors. It presents a clear and direct relationship between the actions described.

Conclusion

The choice "winning" is superior because it maintains grammatical integrity while clearly expressing the connection between Eisenhower's election and his voting percentage. All other options either introduce errors or unnecessary complexity, making them less effective in conveying the intended meaning.