pick a answer

Read the passage and then answer the question. The vulture is a large bird with an unusual diet. Humans generally avoid eating spoiled food. But to a vulture, nothing is better than a large helping of rotting meat. They will gather around a dead animal and eat it with gusto. Scientists aren't sure why, but vultures don't get sick from eating spoiled meat. It may be that something in the vultures' bodies keeps them healthy. Whatever it is, it lets vultures do an important job. They get rid of wormy, rotten stuff that could make people ill. What is the meaning of gusto as used in the passage? humor enjoyment wisdom shyness