Which of the following symptoms is likely to afflict an astronaut in space (a) swollen feet, (b) swollen face, (c) headache, (d) orientational problem.

Explanation

To determine which symptoms are likely to afflict an astronaut in space, we need to analyze the effects of microgravity on the human body.

### Step-by-Step Solution:

1. **Understanding Gravity on Earth:**
- On Earth, gravity (G) acts downwards, causing blood circulation to flow from the head to the legs. This results in more blood pooling in the legs and less in the head.
- **Hint:** Think about how gravity affects blood flow in a standing position on Earth.

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