**Core Concept:**
Temporal lobectomy is a surgical procedure that involves the removal of part or all of the temporal lobes in the brain. These lobes are involved in various functions, including memory, language, and emotional processing. In monkeys, this procedure affects their cognitive abilities, particularly in the domains of memory and language.

**Why the Correct Answer is Right:**
Temporal lobectomy in monkeys leads to significant impairments in memory and language functions. The temporal lobes are crucial for these processes due to their involvement in the formation, storage, and retrieval of memories, as well as language comprehension and production. The surgery disrupts the connectivity between the temporal lobes and other brain regions, resulting in the observed cognitive deficits.

**Why Each Wrong Option is Incorrect:**
A. Memory and language impairments are not expected from this procedure, as the temporal lobectomy directly affects the regions involved in these functions.
B. While the procedure may affect other brain regions, the primary focus of the surgery is the temporal lobes, leading to the observed cognitive deficits.
C. This option is similar to B, as the primary focus remains the temporal lobes, which are crucial for memory and language.
D. This option is similar to A and B, with the primary focus being the temporal lobes and the resulting cognitive impairments.

**Clinical Pearl:**
Understanding the role of the temporal lobes in memory and language is crucial for understanding the effects of temporal lobectomy. This knowledge aids in interpreting neuropsychological test results and making informed judgments regarding surgical interventions in neurological patients.

**Correct Answer:** D. Temporal lobectomy in monkeys leads to memory and language impairments due to the direct impact on the temporal lobes, which are essential for these cognitive functions.