Final answer:
Fast Mapping, Mutual Exclusivity, and Whole Object Assumption are learning strategies that underlie cognitive constraints, highlighting how children learn language and categorize their environment.
Step-by-step explanation:
The three-word learning strategies that underlay cognitive constraints are B) Fast Mapping, Mutual Exclusivity, Whole Object Assumption. These strategies are part of how children learn language and categorize the world around them.
Fast Mapping is the process by which children quickly connect new words to their meanings after only a brief encounter. Mutual Exclusivity is a strategy children use to learn language where they assume that each object has only one name and each word refers to a unique object. Whole Object Assumption refers to a child's tendency to associate a new word with a whole object rather than with a part, property, action, or other portion of an object.
This reflects the cognitive psychology's focus on cognition, and how individuals understand and apply knowledge and skills in the problem-solving process.