Social cognition impacts communication by helping individuals:

Social cognition plays a crucial role in communication primarily by enhancing our ability to engage with others in empathetic and understanding ways. This involves recognizing and interpreting social cues, emotions, and intentions of others, which significantly enriches interpersonal interactions. It allows individuals to not only convey their thoughts but also to respond appropriately to the emotions and needs of their conversation partners. This empathetic engagement fosters deeper connections and improves the overall quality of communication.

While understanding grammar, focusing on technical language aspects, and considering abstract concepts are important in their respective contexts, they do not directly encapsulate the social and emotional nuances that social cognition brings to communication. Therefore, the emphasis on empathy and understanding through social cognition is what makes this answer the most fitting.