**Core Concept**
The Mini-Mental State Examination (MMSE) is a widely used, 11-question test for cognitive impairment and to screen for dementia. It assesses several cognitive functions, including arithmetic, memory, and orientation, to provide a global measure of cognitive function.

**Why the Correct Answer is Right**
The MMSE is scored out of 30, with a maximum score indicating minimal cognitive impairment. The test items are weighted to prioritize assessment of memory and orientation, which are critical for evaluating cognitive status in patients. The memory component is particularly important, as it assesses the patient's ability to recall previously presented information and is a key indicator of cognitive decline.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the MMSE does not prioritize arithmetic skills; rather, it includes a simple arithmetic question to assess cognitive flexibility.
**Option B:** This option is incorrect because the MMSE actually assesses orientation to time, not date, as a critical component of cognitive function.
**Option C:** This option is incorrect because the MMSE includes a range of cognitive tasks, but memory and orientation are the primary components that contribute to the maximum score.

**Clinical Pearl / High-Yield Fact**
Remember that the MMSE is a screening tool, not a definitive diagnostic test, and should be used in conjunction with clinical evaluation and other diagnostic tools to assess cognitive function.

**Correct Answer:** C. Memory and orientation are the key components that contribute to the maximum score in the MMSE.