Select the option that is the passive form of the given sentence.

She did not forget me even though I have been away for a year.

I have not been forgotten even though I have been away for a year.

The correct passive form of the sentence "She did not forget me even though I have been away for a year" is I have not been forgotten even though I have been away for a year.

The other options are incorrect because:

• Even though I have been away for a year she did not forget me is in the active voice, not the passive voice.
• Though I have been away for a year she has not forgot me: This option maintains the active voice and incorrectly uses the past tense form "forgot" instead of the past participle "forgotten" in the passive voice construction. In the passive voice, "forget" should be conjugated as "been forgotten."
• Even though I have been away for a year she had not been forgotten uses the past perfect tense, while the original sentence is in the simple present tense.