What is wrong with the sentence Long lines at security, delayed departures, and missed connecting flights can sometimes test even the most experienced airline traveler’s patience

Corrected Sentence:

Long lines at security, delayed departures, and missed connecting flights can test the most experienced airline traveler's patience.

The original sentence is grammatically correct, however, there are too many words at the end and it makes it confusing for the reader. There are many ways you can approach this sentence. What I did was take out the words 'even' and 'sometimes' to make the point more clear.

I hope this helps xD

the answer is c) !