a. The physicists who discovered the principle of the black hole have spent thousands of hours in cerebral activity. b. The basketball star enjoys both sports and cerebral games. c. The graduates wore robes of cerebral blue. d. The cerebral cortex is composed chiefly of gray matter responsible for important nervous responses in the body. Circle the letter of the sentence in which the word in bold-faced type is used incorrectly. bold faced word is cerebral...