He drives a racecar 80 miles per hour. He motivates audiences of hundreds. He's earned awards for his performance on and off the racetrack, and he's traveled the country to compete. Did we mention that he's 13 years old? One look at his accomplishments and it is easy to see that Noah "Little Gator" Cornman is on the fast track to success. "Little" might be a part of his nickname, but it does not describe his determination to succeed and his heart to make a difference for kids like him. In paragraph 1, which sentence implies that the author is impressed with the teen's accomplishments?
a
He drives a racecar 80 miles per hour.

b
He motivates audiences of hundreds.

c
Did we mention that he's 13 years old?

d
He's traveled the country to compete.

C

Explanation:

This answers implies that the aforementioned accomplishments are a lot for a 13 year old.

Hello!! I believe this is the answer to your question (人◕ω◕)

Question: Which sentence implies that the author is impressed with the teen's accomplishments?

C // Did we mention that he's 13 years old?

Hopefully this helped you out, good luck!（＾∀＾）

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).