The vocabulary words in each of the groups below have a category in common. Mark the letter of the correct category for each group of vocabulary words.

1			sun / rain / wind / snow / humidity
			A)	holidays
			B)	weather
			C)	activities
			D)	animals
2			cold / flu / pneumonia / influenza
			A)	food
			B)	wildlife
			C)	things in a garden
			D)	illnesses
3			tired / nervous / irritable / depressed / happy
			A)	oceans
			B)	fast foods
			C)	states of feelings
			D)	natural disasters
4			water pollution / global warming / endangered species of animals
			A)	environmental issues
			B)	travel destinations
			C)	cooking
			D)	mental illnesses
5			hiking / gardening / snowboarding / swimming / camping
			A)	classes
			B)	cultures
			C)	science
			D)	outdoor activities