Correct option is D. I saw Mike run like the wind.
I saw Mike run like the wind, this sentence is correctly capitalized and punctuated.
The sentence begins with the pronoun – I, which is capitalised. Then, name – Mike-M is in capital and at the end of the sentence, there is a period. All the other sentences are not punctuated properly.
In the option 1, I is not capitalised. In the option 2, there was no period (.) at the end of sentence. In the option 3, there was question mark (?) instead of a period (.) at the end of sentence.