Private speech may be a way for children to practice the practical skills required in conversation, also known as ___________, which is the aspect of language relating to communicating effectively and appropriately with others

Human development begins when a sperm penetrates the membrane of:

an ovum. the ovary. the placenta. an amino acid.

What are Zener cards?

a) a collection of paintings that have provided inspiration for psychics b) five cards with geometric patterns that are used in paranormal research c) a series of cards used by psychics who claim to be able to predict the future d) cards used by magicians' assistants to signal personal information about audience members