Reflexive swimming and stepping movements

A) are just that, reflexive, and then they disappear.
B) should be practiced so children can learn to swim and walk earlier.
C) only disappear because most parents don't take advantage of them.
D) usually are only present in girls, who then learn to swim and walk earlier.

Reflexive swimming and stepping movements are innate reflexes observed in infants. These reflexes are automatic and not consciously controlled. They typically fade as the child grows older and are replaced by voluntary movements. This natural progression does not depend on practice or parental intervention to evolve into more complex skills like walking or swimming.