Read the following sentence. Ari had been very nervous before the audition, but now that he was finished and he saw the approval on everyone’s faces, he knew he had nailed it.

Use context clues to find the correct definition of the multiple-meaning word nailed as it is used in this sentence.

The definition for "nailed' in this is "to have done precisely"  

Explanation:

In this sentence it states that Ari had seen the "approval on everyone's faces" which in other words he think he had prosecuted the audition correctly which shows that the word nailed must mean "to have done precisely". Another reason is that the other definitions of nailed do not describe this correctly.

laughter and happiness are an essential part of life. laughing releases the body's "feel good" chemicals. thus, it provides long or short term relief from stress and or anxiety. more or less, laughing strengthens social connections and provides an easy approach in social related situations.

moreover, there are many benefits of laughter and humor. it's as if they play the role of superhero to combat anxiety and depression, according to researchers. happiness and laughter is the best medicine for teen mental health.

what happens in the body also affects the mind. the positive changes in physical health also have profound an impact on mental health. we have a lot to gain from laughing! medical effects of laughter have continued to validate the pain-relieving effect and benefits of laughter.

scientists tell us that laughter and humor actually, believe it or not, lower blood pressure, reduce stress hormones and increase muscle flexion. there are many benefits to happiness and laughter, and they so happen to increase the circulation of antibodies in the blood stream and make us resistant to infections.

as stated before, laughing releases your body's "feel good" chemicals, and on a related note, negative stress can cause your body to release chemicals that weaken your immune system which makes you more likely to contract a disease. luckily, laughter reduces negative stress and prevents those chemicals from being released.

all in all, you may want to consider laughing as much as you can!