Motor area of Brodman’s is area:

**Core Concept**
The motor area of Brodmann's cortex refers to the primary motor cortex, a region of the brain responsible for transmitting signals from the cerebral cortex to the spinal cord, ultimately controlling voluntary movements. This area is characterized by its distinctive cytoarchitectural features and is divided into four distinct cytoarchitectonic areas: areas 4a, 4b, 4c, and the premotor cortex.

**Why the Correct Answer is Right**
The primary motor cortex is located in the precentral gyrus of the frontal lobe, specifically in Brodmann areas 4a, 4b, and 4c. These areas are responsible for controlling the execution of voluntary movements, with each area corresponding to a specific limb or group of muscles. The premotor cortex, located adjacent to the primary motor cortex, plays a role in planning and coordinating movements. The primary motor cortex contains large pyramidal neurons that project to the spinal cord, where they synapse with motor neurons to initiate muscle contractions.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the primary sensory cortex, not the primary motor cortex, is located in the postcentral gyrus.
**Option B:** This option is incorrect because the premotor cortex, while adjacent to the primary motor cortex, is not the primary motor cortex itself.
**Option C:** This option is incorrect because the primary motor cortex is not located in the parietal lobe, but rather in the frontal lobe.

**Clinical Pearl / High-Yield Fact**
The primary motor cortex is often tested in neurological exams, such as the Babinski reflex, which assesses the integrity of the corticospinal tract.

**Correct Answer: C.**