He is laboring ___ a misapprehension, but laboring ___ a cause.with; overwith; overby; inin; towardsunder; for

To complete the sentence correctly, we need to choose appropriate prepositions based on the phrases "laboring ___ a misapprehension" and "laboring ___ a cause."

1. Analyzing the first phrase: "laboring ___ a misapprehension"

   • The correct preposition is "under," which means he is working under a misunderstanding.

2. Analyzing the second phrase: "laboring ___ a cause"

   • The appropriate preposition here is "for," indicating that he is working in support or in pursuit of a cause.

So, the sentence should read: "He is laboring under a misapprehension, but laboring for a cause."

Final Answer

He is laboring under a misapprehension, but laboring for a cause.