Answer: You didn't include the article, but I can kind of guess?
Explanation: He believes that all teenagers go through something, and he tells adults to help them, instead of just thinking of them as moody teenagers.
Working out: 6.25% = 4 half lives (20x4=80ma) 80ma is how old the rock is
A is the answer because it doesn’t describe the family as a whole, just the grandmother
The answer is
A. Onomatopoeia. :)