Question

(1) We decided to climb Mt. Rainer, but it was a long, hard journey to Washington State from Medford, Oregon. (2) We were worried about our likely sucess in the cold enviroment of the upper slopes. (3) For one thing, Marty was broke and anxius about having warm clothes for climbing. (4) To solve that problem, the rest of us choose to chip in and get him good cold-whether gear. (5) At last, we set off for Mt. Rainer. (6) But, when we arrived, it was snowing hard. (7) A local guide recommended that we spend the night in a motel in Tacoma.

Answer 1

I think the question is asking which sentences include misspelled words.

It's sentences 2 and 4 and the misspelled words are:
 
"success" and "environment" in sentence 2: they are misspelled in the original text.

"cold-weather gear" and "chose" in question 4

Additionally "anxious" is misspelled in question 3.