The cerebellum and basal nuclei are involved in regulating motor activity, starting and stopping movements, and coordinating postural movements.

a. true
b. false

The correct answer is - True.

Explanation:

The cerebellum is the major part of the brain that receives the sensory information and regulate the motor movements. The information that is come from the various parts of the brain helps motor neurons to coordinate different functions such as speech, balancing, maintaining posture.

It is the part of the base of the brain which is responsible for the various functions such as coordination and body movements. It is made up of the four bunch of nerve cells.

Thus, the correct answer is - true.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.