Preschoolers use private speech:

A. to influence others
B. to keep some of their ideas a secret
c. because it is more efficient
d. because it enables them to communicate new ideas.

The correct answer is: d. because it enables them to communicate new ideas.

Preschoolers use private speech to help them organize their thoughts and ideas. This self-directed speech allows them to verbalize their thoughts and communicate new ideas to themselves. It serves as a tool for them to plan, problem-solve, and regulate their behaviors. It also helps them understand and make sense of the world around them. Private speech gradually becomes more internalized as children grow older and develop more advanced cognitive abilities.

The correct answer is D. Preschoolers use private speech because it enables them to communicate new ideas. To arrive at this answer, we need to understand what private speech is and how it functions in the context of preschoolers.

Private speech refers to the practice of children talking to themselves, either out loud or in their thoughts, as they engage in various activities. It is often observed in preschool-age children, typically between the ages of 2 and 5.

Preschoolers use private speech as a means of self-regulation and cognitive development. When children engage in private speech, they are essentially talking themselves through a task or problem-solving situation. By verbalizing their thoughts and actions, they can better process information, organize their thoughts, and plan their actions.

Private speech also helps preschoolers develop and communicate new ideas. By verbally expressing their thoughts, they can clarify their thinking and explore new possibilities. It allows them to practice and refine language skills, as well as express their creativity and imagination.

Therefore, option D - because it enables them to communicate new ideas - is the correct answer. Preschoolers use private speech as a tool to express and share their thoughts and ideas, contributing to their cognitive and linguistic development.