A. I went to the park, and I saw a dog.
B. I went to the park and, I saw a dog.
C. I went to, the park and saw a dog.
D. I went to the park and I, saw a dog.
Answer: I went to the park, and I saw a dog.
A. I went to the park, and I saw a dog.
B. I went to the park and, I saw a dog.
C. I went to, the park and saw a dog.
D. I went to the park and I, saw a dog.
Answer: I went to the park, and I saw a dog.
Additional Information: Commas are used to separate independent clauses.
Subjects: Punctuation, Grammar