The correct option is "haven't heard." This is the present perfect tense, which is used for actions that started in the past and have relevance to the present moment. The structure is "haven't + past participle" (heard).
- Option (b) "haven't hear" is incorrect because "hear" should be in its past participle form ("heard").
- Option (c) "hasn't heard" is incorrect because the subject "I" requires the auxiliary verb "haven't."
- Option (d) "hasn't hear" is also incorrect for the same reasons as (b) and (c).
Thus, "haven't heard" is the correct choice, matching the subject and tense.