**Concept: The question tests on the application in Probability**

**Solution:**

If the probability of an event happening is P(A), then the probability that the even wont happen = 1 - P(A)

Probability that the first sniper misses = 1 - 0.9 = 0.1.

Probability that the second sniper misses = 1 - 0.7 = 0.3.

Probability that the third sniper misses = 1 - 0.5 = 0.5.

Probability that all 3 miss their target = 0.1 * 0.3 * 0.5 = 0.015**Option A**