Question

embryonic development __________. a refers to the first week b refers to week two through month two c refers to months three through nine d all apply.

Explanation:

Embryonic development is a stage in prenatal development. The first week is the germinal stage. Embryonic development specifically refers to week two through month two. Months three through nine is the fetal stage. So only option B is correct.

Answer:

B. refers to week two through month two