C. The word originated from greek philosophers during the study of 1667
Carbon monoxide is the answer.
Answer: embryo
Explanation:
An embryo is the early stage of the development of the diploid cell called as zygote. It is formed by the continuous cell division and differentiation of the zygote. It is the unborn offspring which is in the state of development. In humans the embryonic state remains from second to eighth week after the process of fertilization. After eighth week the embryo is called as fetus.
According to the given situation, the six weeks of pregnancy is indicative of embryonic state.
