Direction: In the question given below, three sentences are given, each of which has two words highlighted in bold. Choose the word in each sentence that fits appropriately in the context, and select the right option.

1. She was (A)invincible/(B)invisible in the dusk of the room.
2. Malaria that is (A)irrecoverable/(B)invulnerable to drugs is spreading across the world.
3. Philosophers use (A)linguist/(B)logic to prove their arguments.