Children express emotions in a clear and intentional way, and begin to express some complex emotions, such as pride.

O a. 8 months
O b. 18 months
O c. 36 months
O d. 60 months

b. 18 months

The correct answer is c. 36 months.

At around 36 months, children begin to express more complex emotions, such as pride. Prior to this age, children tend to express basic emotions like happiness, sadness, and anger, but the ability to express more complex emotions develops as they grow and develop their language and social skills.

The ability to express complex emotions such as pride in a clear and intentional way typically develops as children grow older and their emotional understanding matures. Let's walk through the options to determine when this milestone is most likely to occur.

a. 8 months: At this age, infants are still developing their emotional repertoire and primarily express basic emotions like happiness, sadness, and anger. They may start to show signs of excitement or joy, but complex emotions like pride are unlikely to be expressed.

b. 18 months: Toddlers around this age are beginning to expand their emotional range. They can exhibit a wider variety of emotions, including more complex ones like jealousy, affection, and frustration. However, pride is still considered a more advanced emotion that typically emerges later.

c. 36 months: By the age of three, children have made significant progress in their emotional development. They have better language skills and understanding of social expectations, which allows them to express a wider range of emotions with greater clarity. Although they may start to exhibit some aspects of pride, it is still not as fully developed as it would be in older children.

d. 60 months: At the age of five, or 60 months, children have had more time to refine their emotional skills. They are increasingly able to articulate their feelings and demonstrate a better understanding of complex emotions. By this age, children may begin to express pride in themselves or their accomplishments with more clarity and intentionality.

Based on this analysis, the most fitting choice for when children begin to express complex emotions like pride is option c. 36 months. However, it's important to note that every child develops at their own pace and there may be some individual variation.