**Core Concept**
The Mini-Mental State Examination (MMSE) is a widely used test for cognitive impairment and to screen for dementia. It is a brief 30-point questionnaire that is used extensively in clinical and research settings to measure cognitive impairment. It assesses several cognitive functions including arithmetic, memory, and orientation.

**Why the Correct Answer is Right**
The MMSE is scored out of a total of 30 points, with higher scores indicating better cognitive function. The test is divided into several sections, each assessing different aspects of cognitive function, such as registration, attention and calculation, memory, and language. A perfect score on the MMSE is 30, indicating no cognitive impairment.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not reflect the total possible score of the MMSE.
**Option B:** This option is also incorrect as it underestimates the total score.
**Option D:** This option overestimates the total score of the MMSE.

**Clinical Pearl / High-Yield Fact**
The MMSE is a valuable tool in assessing cognitive function and screening for dementia. Remember, a score of 24 or above is generally considered within the normal range, though this can vary depending on the individual's educational level and other factors.

**Correct Answer:** C. 30