3. which term describes a physical or mental representation of an object or event?
a a law
ob a model
c a hypothesis

B. a model

Explanation:

A model is a representation of a process, event, molecule or situation that is too big or too small to be studied in its actual size. The models can be a physical or mental representation, the important thing is that they allow something to be visualized and touched whenever necessary so that a study can be completed.

As an example of models, we can mention: models of DNA molecules, model of volcanoes, model of atoms, model of how the information passes between neurons, building models, among others.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

the answer is d. chordata