Which of the Following Pairings Accurately Reflects the Behavioral and Neural

Which of the following pairings accurately reflects the behavioral and neural embryonic development of the Atlantic salmon (Salmo salar) ?

A) coordinated movement of fins and jaw; development of sensory system of trunk
B) first undulating movements associated with swimming; development of sensory system of trunk
C) initial movements in heart and dorsal muscles; prior to nervous system formation
D) moves in response to tactile stimulation; prior to nervous system formation