During which stage of prenatal development are nearly all basic organs formed?

a. germinal
b. fetal
c. embryonic
d. birth

Explanation:

There are 3 stages of Prenatal Development: germinal, embryonic and fetal.

The germinal stage occurs from 0 to 2 weeks, starts when the sperm and egg cell unite in one fallopian tube. During this stage, basically occurs cells division process.

The embryonic stage occurs from 3 to 8 weeks. At this point a mass of cells is formed, which is called embryo. During this stage starts the development of the brain, and begin to divide into in layers, which will become in a important body system. Around the fourth week, the head, followed by eyes, nose, mouth and ears, begin to form. During the fifth week, arms and legs appear. By the end of the embryonic period, all basic organs are formed, the brain and the nervous system is established.

At las, the fetal stage occurs from 9 weeks to birth. During this time, the embryo is now a fetus, the brain continues to grow and the body sized increases.

Therefore, according to all these stages, the correct answer is C, because during the embryonic stage, all basic organs are formed.

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