Answer:
Maybe it is 5.50 because not much information is given to calculate it or to find it.
They are found in any habitat but most live on lan, mainly in soil or on plant material
The part of the CNS that is responsible for these functions is the brain stem.
The brain stem is the part of the brain that control very basic functions of your organism and lets them work together as they should. The other parts that are mentioned all have much more specific and also different roles.
I think A because males have XY and females have XX but don’t count on it