The correct answer is D) A source that's cited in another source.
D. balance
A person’s vestibular sense helps control balance. In most
mammals, the vestibular system is the sensory system that has the leading
contribution to the sense of balance and spatial orientation for the purpose of
coordinating movement with balance. The vestibular sense reacts to a change in
the positioning of the head or when the feet are lifted of the ground. This can
also help in regulating a child to keep him/her focused and attentive. Examples
of activities that need vestibular input are: somersaults, swinging, hanging
upside down form a monkey bar.
A. Freeze, freeze thou bitter sky,/ That does not bite so nigh/ As benefits forget.
To encourage others,and help each other as if you were all family.