The Answer to your question is B that person Is right.
Three traits that might be desired in sheep are:
-larger
-grow faster
-disease free
First is the brain, spinal cord, and heart begin to develop. Then A blood vessel forms which will later develop into the heart and circulatory system.
Answer:
Development that takes place before the age of nine.
Primary sexual characteristics appear at birth and comprise both the external and internal genitalia (e.g., the penis and testes in men and the vagina and ovaries in women).
