Part A. Tap the word that ¨it¨ refers to. Laugh-- it good for you
1. exercise
2. laughter
3. oxygen
                                             
                                          
                                          
                                        
											 
											Answer:
Laughter
Explanation:
The answer is "laughter" because in the sentence that "it" refers to laughter, it states "Its effects..." In prior sentences, the article talked about the beneficial effects of laughter.