OFFICIAL EXPLANATION

Cautious, conservative.

Gupta's policies are "prudent," meaning thoughtful, and "progressive," while also "remaining $\qquad$ about imposing drastic social changes." The word "while" indicates a contrast, so the party is likely being careful not to do anything drastic. Both "cautious" and "conservative" fit well. "Passionate" and "fervent" are a great pair, but the meaning is the opposite of what you want. "Congealed" (took shape or coalesced) does not match the required meaning and "concerned," while tempting, does not have a pair among the answers.