Identify the group `16 (VI A)` element that fits each of the following description is:
(a)the most electronegative
(b)semimetal
( c)radioactive
(d)the most abundant element in the earth's crust.

Explanation

To solve the question of identifying the group 16 (VI A) elements based on the given descriptions, we will analyze each description step by step.

### Step-by-Step Solution:

1. **Identify the Elements in Group 16:**
The elements in group 16 (VI A) are:
- Oxygen (O)
- Sulfur (S)
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