PLZZZ AWNSER QUICK I WILL GIVE BRAINLIEST TO WHOEVER AWNSERS RIGHT

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

What came first egg or chicken? and is tomato a vegetable or a fruit?

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?