Which of the following BEST corrects one error in the sentence?

Because many fans in the crowd was tired of the teams loses they left early, and missed the first win ever.

a) add a comma after Because

b) add a comma after loses

c) change teams to teams'

d) change fans to fans'

Option B is the correct answer:

Add a comma after loses corrects one error in the sentence

Because many fans in the crowd was tired of the teams loses, they left early, and missed the first win ever.

Explanation:

There should be a 'comma' after loses to make the sentence grammatically correct. The sentence means that since the crowd was tired of many loses of the team, they left early.

Other options, is used, will be grammatically incorrect in the sentence. There is no use of a comma after because in the sentence. The meaning of the sentence would not be clear. Similarly, as per option c, if teams is changed to teams' or fans is changed to fans' as per option D, sentence would not make any sense. So, option B is the correct answer.