I would probably choose the Vegatable food group because 1.Its healthy 2. You can grow up strong and 3.You will be more heathier than usual. Mind my grammer mistakes,but I hope this helps!
It is (B) it is strange but it does weaken the immune system
I think it was two weeks if it’s the same thing I remember. I’m not 100% sure
a, because exercise doesn't just aid the prevention of certain diseases, it helps prevent many diseases. i would've chosen d if it wasn't so specific but a is the correct answer.