Final answer:
The most helpful recommendation for parents of an 18-month-old is to describe proper behavior when their child misbehaves, aligning with their cognitive development stage which includes responding to verbal requests and understanding cause-and-effect relationships. The correct answer is option: C) Describing proper behavior when she misbehaves.
Step-by-step explanation:
The recommendation that will be most helpful to the parents of an 18-month-old girl is C) Describing proper behavior when she misbehaves. This is an age where toddlers are continuously learning and testing boundaries. It is essential for parents to understand the cognitive milestones for their child’s age, as they include responding to verbal requests and understanding the basics of cause-and-effect relationships. Teaching children about consequences for their actions is important for their cognitive and social development.
Other cognitive skills, such as complex math concepts or abstract philosophical ideas, are not appropriate for an 18-month-old, as these presuppose a higher level of abstract reasoning than what is developmentally expected at this age.
Likewise, advanced language skills are acquired over time through exposure and interaction, rather than through deliberate teaching of advanced concepts at this stage.