[A]: Brain does not affect in the absence of glucose.
[R]: Glucose is stored in the neuron cells.

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

To solve the question regarding the assertion and reason statements about the brain and glucose, we can follow these steps:

### Step 1: Analyze the Assertion
The assertion states: "Brain does not affect in the absence of glucose."
- The brain primarily relies on glucose as its main energy source. In the absence of glucose, the brain cannot perform its functions effectively, leading to functional brain failure. Therefore, this assertion is **false**.

### Step 2: Analyze the Reason
The reason states: "Glucose is stored in the neuron cells."
- Glucose is not stored in neuron cells. Instead, it is stored in the body primarily as glycogen in the liver and muscle cells. Therefore, this reason is also **false**.

### Step 3: Conclusion
Since both the assertion and reason are false, we can conclude that the correct answer is that both the assertion and reason are false.

### Final Answer
The correct option is: **Both assertion and reason are false.**

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