Night blindness is caused due to deficiency of _________ in our food.

Explanation

To solve the question "Night blindness is caused due to deficiency of _________ in our food," we can follow these steps:

### Step-by-Step Solution:

1. **Understand Night Blindness**:
- Night blindness is a condition where a person has difficulty seeing in low light or darkness. This indicates a problem with vision that is particularly noticeable at night or in dimly lit environments.

2. **Identify the Nutritional Deficiency**:
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