Which of the following lists demonstrates various tenses of an irregular verb?
a. i try, i tried, i will try
b. i walk, i walked, i will walk
c. i call, i called, i will call
d. i go, i went, i will go

Am irregular verb means that the different forms of the verb will differ and will not follow a regular pattern,

The pattern here should be:
I VERB, I VERB-ed, I will VERB

the first three options follow this pattern, so they are regular,

the correct answer is D. it is irregular: the past tense form is irregular.