The correct answer is D. met.
The verb “meet” is a regular verb, which means that it forms the past tense and past participle by adding -ed. In this case, the subject of the sentence is “I,” which is in the first person singular. The correct conjugation of the verb “meet” for the first person singular past tense is “met.”
The other options are incorrect because they do not follow the rules of regular verb conjugation. Option A, “was met,” is in the passive voice, which is not appropriate for this sentence. Option B, “did met,” is not a correct conjugation of the verb “meet.” Option C, “mete,” is the past tense form of the verb “mete out,” which means to give out or distribute something, usually in a fair or just way. This meaning does not make sense in the context of the sentence.