The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
Her friends were not able to attend her marriage because they are in another country at that time.

Correct option is D

Option (d) contains an error. The correct verb form should be "were" instead of "are" to maintain consistency with the past tense context provided in the rest of the sentence. The phrase should read "because they were in another country at that time."
· Grammatical rule used: Tense consistency requires that verbs in a sentence maintain the same tense, especially when describing actions or states of being in the past.
· Example: They were not able to come to the meeting because they were sick.