Which of the following can cause a communicable disease?

a. heredity

b. something in the environment

c. a virus

d. lifestyle

Mike is working hard at a marching band practice on a hot saturday afternoon he has flushed moist skin and sharp pain in his legs what he illness is he most likely experiencing

Which of the following foods would be the best choice for someone who's lactose-intolerant?   a.  frozen yogurt    b.  strawberry sorbet    c.  cheesecake    d.  chocolate ice cream

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?