Which of the following represents the formation of a hypothesis a deep study of history of scientific thought b conscious observation of the world around us c algorithm devised to study nature systematically d factual understanding of living and nonliving things

Conscious observation of the world around us may lead to the
formation of a hypothesis, but it doesn't always have to.

Conscious observation of the world around us often leads to the reaction
of "Gee look at that !  That's weird.  I wonder what causes that." .

At THAT point, the observer may form the further thought: "Y'know what !
I'll just bet that when [THIS] happens, [THAT] happens." .

That thought is the hypothesis.

Disagree.

Because the elements in the same row have different number of electrons in the external shell and the electrons in the external shells are the ones that participate iin the chemial reactions; then different number of electrons in external shells predict diferent behavior in chemical reactions.