Answer:
1. A. honest; straightforward
2. A. "Before Gandil was a ball player he mixed in with gamblers and low characters in Arizona,"
3. C. To illustrate that as long as gambling is legal, there will always be corruption in sports.
4. C. “‘Then he got me in on the deal, and we fixed the rest. It was easy to throw the game.’”
Explanation:
Phrases like "on the square" can best be understood by reading the passage. It is the context that provides the intended meaning.
Where, the context is missing, the result of understanding phrases becomes a mere guesswork.