The answer to this question is d
The development of motor skills is key as if a young child does not learn these skills they'll find life activities troublesome these activities include: writing, painting, tying shoelaces, playing with toys such as lego etc. certain children may have problems learning fine motor skills due to disabilities such as: Atention deficit disorder, foetal alcohol disorder and autism.
The problem of respiratory system
Because it looks nasty to them so they don’t wanna risk trying it and not liking it so they just throw it away.
