What are three key characteristics associated with autism?

The key characteristics associated with autism include social challenges, communication difficulties, and unusual behaviors, which are clearly identified in the correct choice.

Individuals on the autism spectrum often exhibit significant challenges in social interactions. This can manifest in difficulty understanding social cues, challenges in forming relationships, and a tendency to prefer solitary activities.

In terms of communication, many individuals with autism may have delayed speech and language skills, or they might communicate in unconventional ways. Some might struggle with understanding verbal and non-verbal communication, making it difficult to engage in typical conversational exchanges.

Unusual behaviors can encompass a wide range of activities, from repetitive movements (like hand-flapping or rocking) to specific interests that are intensely focused on and can dominate their attention. These behaviors can be a means of coping with the world around them, which may feel overwhelming.

The other options identify various characteristics that might be relevant in different contexts. For instance, while emotional aspects are important in understanding an individual's overall experience, they do not specifically highlight the core features of autism as effectively as social, communication, and unusual behavior characteristics.