Correct option is B
Both (A) and (R) are true and (R) is explanation of (A).
Both the assertion (A) that "Language is an effective tool for communication" and the reason (R) that "Language helps to convey social messages" are true. Language is a fundamental tool for communication, allowing individuals to express thoughts, emotions, and ideas. It also plays a crucial role in conveying social messages, including cultural norms, values, and expectations.