Answer:
The first sentence. "The plague was unavoidable, and unpredictable in regards to whom it would affect."
Explanation:
Answer: Making someone very weak and infirm.
"debilitating back pain"
tending to weaken something.
"the debilitating effects of underinvestment"
Explanation:
The second one. To protects them from hearing the deadly song of the sirens
C. It makes the skull sound like a toy ball, adding to the grandfathers casual view of the deaths caused by the battle.
A is not correct because if it was unavoidable, he would have said something different to describe the forgotten skull.
B. Is not correct because if it brought sad memories, he would not have brought it up, sad memories hurt.
D is not correct because he would have described much worse if he wanted to frighten the children