The line of dialogue that is punctuated correctly is:
"But I really want one," he whined.
The other options either lack punctuation or have incorrect punctuation placement.
"Our lease says no pets," his mother replied ( correct answer)
"Why don't you start dog walking business," his sister replied.
I want a pet, James said.
or "But I really want one," he whined.
The line of dialogue that is punctuated correctly is:
"But I really want one," he whined.
The other options either lack punctuation or have incorrect punctuation placement.