The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.
All the problems occurred / because she does not / hear my words.

Correct option is A

Option (a) contains an error.
Error Explanation:
There is a tense mismatch in the sentence. The main clause “All the problems occurred” is in past tense, but the subordinate clause “because she does not hear” is in present tense, which is grammatically incorrect.
To maintain tense consistency, the correct form is:
✅ "because she did not"
✅ Correct sentence: All the problems occurred because she did not hear my words.
Grammatical rule used:
Tense Consistency Rule – When clauses are linked, especially cause-effect sentences, the tenses must be consistent. If the main clause is in the past tense, the subordinate clause should also be in the past.
Example:
❌ He failed the test because he forgets the answers.
✅ He failed the test because he forgot the answers.
Thus, "does not" (present tense) should be replaced with "did not" (past tense) to match the verb "occurred."