Question

during the third week of development, which two systems begin to develop?
a nervous and digestive systems
b respiratory and lymphatic systems
c nervous and cardiovascular systems
d muscular and urinary systems

Explanation:

During the third week of embryonic development, the neural plate (which will form the nervous system) and the primitive heart tube (beginning of the cardiovascular system) start to develop. The nervous system development begins with neurulation, and the cardiovascular system's heart starts its initial formation.

Answer:

C. Nervous and cardiovascular systems