The answer to your question is "maggots"
The closest answer is C
The sympathetic nervous system is the part of the autonomic nervous system that prepares the body to react to stresses such as threat or injury.
The parasympathetic nervous system is the part of the autonomic nervous system that controls functions of the body at rest.
Ice floats because it expands (kid version). The molecules are less dense in ice than when water (H2O) and the structure is different.
Hope that help