Final answer:
d) Gradually learn normal facial expressions through trial and error. Children who are born deaf and blind can develop expressions of smiling, frowning, laughing, and crying through unique communication methods.
Step-by-step explanation:
Children who are born deaf and blind develop their communication and expression skills in unique ways. While they may not be able to receive visual and auditory cues like normally sighted and hearing children, they can still develop expressions of smiling, frowning, laughing, and crying.
For example, a child who is born deaf and blind can learn to imitate facial expressions by feeling other people's faces. By feeling the movements of the muscles in someone's face while they are smiling or frowning, the child can mimic those same expressions. This is a form of nonverbal communication that can help them express emotions and connect with others.
In some cases, children who are born deaf and blind may gradually learn normal facial expressions through trial and error. Through repeated interactions and observation of others, they can learn the appropriate facial expressions for different emotions and situations.