Final answer:
Understanding another's intentions involves comprehending motives, actions, emotions, and thoughts. Preschool children have some ability to understand intentions but may struggle with complex thoughts and motives.
Step-by-step explanation:
Understanding another's intentions means comprehending the motives, actions, emotions, and thoughts behind their behavior. Preschool children have the ability to understand others' intentions to some extent. They can understand basic emotions and actions, but their ability to understand complex thoughts and motives is still developing.