Five-year-old alex and his mother visited the zoo. while they were there, alex's mother took him to see the squirrel exhibit. alex saw many different types of squirrels, but when he saw a flying squirrel glide from one branch to the next he pointed and said, "a bird with a tail." considering piaget's work, alex is demonstrating an example of

Assimilation

Explanation: According to the theory of Piaget, assimilation is defined as addition of information to the already present schemas or knowledge due to new experience or data. Children tend to add-on new experienced information with the existing concept to modify the schema accordingly.

Alex has also represented this act by seeing a flying squirrel and remarking it as bird with tails because he might be familiar with bird flying and so he remarked the squirrel as a bird with extra features .Thus, the correct answer is assimilation