Which of the following is not an example of reflex action?

Options

A. Withdrawal of limb upon touching a hot object
B. Closing of eyes when strong light is flashed across them
C. Watering of mouth on seeing favourite food
D. Walking on a busy road

Answer

To determine which of the following is not an example of reflex action, we need to understand what reflex actions are. Reflex actions are involuntary and automatic responses to stimuli that occur without conscious thought. They are typically fast and do not involve the brain directly; instead, they are processed through the spinal cord.

### Step-by-Step Solution:

1. **Define Reflex Action**: Reflex actions are quick, involuntary responses to stimuli. They do not require conscious thought and are processed through the spinal cord.

2. **Identify Examples of Reflex Actions**:
- **Withdrawal of limb from a hot object**: This is a reflex action because it is a quick response to a painful stimulus.
- **Closing of eyes when a strong light is flashed**: This is also a reflex action as it is an automatic response to protect the eyes from bright light.
- **Watering of mouth on seeing favorite food**: This is a reflex action as it is an involuntary response triggered by the sight or smell of food.

3. **Evaluate the Last Option**:
- **Walking on a busy road**: This action requires conscious thought and planning. It is not an automatic response to a stimulus; instead, it involves decision-making and coordination.

4. **Conclusion**: Since walking on a busy road is a voluntary action that requires conscious thought, it is not an example of reflex action.

### Final Answer:
The option that is not an example of reflex action is **walking on a busy road**.

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