The British Empire Became One Of The Most Powerful States By:

B

Explanation:

You could use process of elimination. C and D are obviously not correct while A might be correct but B would be the better answer.

ok, so basically your gonna start with 350 ok. so there's 60 seconds in a minute so that means you he can go up 10 ft per minute. soo, after 3 minutes he should be at 260 ft after three minutes : )