This is to observe carefully and in detail so as to identify causes, key factors, or possible results

Explanation:

In the process of analysis a whole is divided in parts, this way the study is more detailed and specific, also you can get a better comprehension. That's why analysis processes are use in science, because there you need to be precise and pay attention to the most tiny factor.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

its first and third is your answer i did the qustion the fourth isnt right