Final answer:
Verbs such as think, ponder, contemplate, and imagine refer to mental actions that cannot be seen by others. These verbs involve processes associated with perception, knowledge, problem solving, judgment, language, and memory.
Step-by-step explanation:
Verbs that refer to mental action
Some verbs refer to mental action that cannot be seen by other people. These verbs include think, ponder, contemplate, and imagine. They involve processes associated with perception, knowledge, problem solving, judgment, language, and memory. These verbs are abstract and represent ideas that we think with our minds. They cannot be touched or seen by our five senses.