Answer:
The three sentences that paraphrase correctly the sentence are:
3. Clemente joined the United States Marine Corps Reserve in the 1958-59 off season, while other players were in Puerto Rico playing winter baseball (the National Archives).
2. Unlike other players who were playing baseball in Puerto Rico, Clemente chose to enlist in the U.S. Marine Corps Reserve during the 1958-59 off season (the National Archives).
1. In 1958-59, Clemente joined the U.S. Marine Corps Reserve while other players in the league played winter ball in Puerto Rico (the National Archives).
Explanation:
The reasons behind this answer are the following: first of all, we can see something very clearly in those three options the meaning of the sentence prevails. While the rest losses it. First, because they don't say that he joined the marine corps in the offseason of 1958-1959. Instead they say that he joined the marine corps for only that period. Second, the fifth option says that the whole league joined the marine corps when they didn't. Thus, this is the correct answer.
