When jenna's mother gives her a cup for the first time, jenna tries to suck on it as if it were a bottle. according to piaget, jenna is trying to the cup into her for bottles?

Piaget studied cognitive development in children. One of the important concepts that he introduced is schemas. The following is a textbook definition of schemas: a cohesive, repeatable action sequence possessing component actions that are tightly interconnected and governed by a core meaning. Essentially, this means that things like tidying up your room, paying a bill are cognitive schemas; one has to thing of the small steps (taking out money, talking to the cashier, cleaning, putting stuff in place) and do them in the correct order. Piaget studied simpler schemas and one of the could be the schema for drinking from a bottle.
One does not need new schemas for every new experience. It is usual that 2 activities are similar enough that the same schema can be applied. In this case, we say that the schema was assimilated to the new situation.
Hence, the answer is: assimilate-schema

Afine-grained igneous rock forms as a result of slow cooling.