**Core Concept**
The Mini-Mental State Examination (MMSE) is a widely used tool to assess cognitive function in patients. It evaluates various cognitive domains such as orientation, attention, memory, language, and visuospatial skills.

**Why the Correct Answer is Right**
The MMSE is scored out of 30, with higher scores indicating better cognitive function. The maximum score is given for correct responses to the orientation questions, which assess the patient's awareness of their current date, location, and time. This is based on the assumption that orientation to time and place is a fundamental aspect of cognitive function.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the MMSE also includes questions on attention, memory, and language, but these are not allocated the maximum score.
**Option B:** This option is incorrect because the MMSE includes a section on visuospatial skills, but this is not allocated the maximum score.
**Option C:** This option is incorrect because while the MMSE does include a section on memory, the maximum score is not allocated to this section.

**Clinical Pearl / High-Yield Fact**
It's essential to note that the MMSE is a screening tool and not a diagnostic test. A score of 24 or above is generally considered normal, while a score of 23 or below may indicate cognitive impairment.

**Correct Answer: C. Memory.**