Which punctuation change will correct this sentence your parents are very stricted for example you can only watch an hour of TV each evening?

The correct punctuation change is to add a comma after "strict" and to change the period after "evening" to a question mark.

Here is the corrected sentence:

Your parents are very strict, for example, you can only watch an hour of TV each evening?

Here's why:

* Comma after "strict": The phrase "for example" is a parenthetical phrase, meaning it adds extra information. Parenthetical phrases are usually set off with commas.

* Question mark at the end: The sentence is asking a question, so it needs a question mark at the end.