The correct answer below is option (C). I need an explanation as to why this is

Question

The correct answer below is option (C). I need an explanation as to why this is the correct answer as opposed to the others based on trends in the periodic table, as it seems to be that there are others which are correct as well. Thank you.

"Which statement best reflects the organization of the modern periodic table:
a) Elements are always arranged in order of increasing atomic weights
b) Metallic properties increase going from bottom to top in a family of elements.
c) nonmetallic properties tend to predominate for elements at the far right portion of the table.
d) each transition element is placed in the column of the main group element that it most closely resembles.
"

Explanation / Answer

because Chalcogens are group 16 in the periodic table. Starting with oxygen, these elements are mostly nonmetallic and somewhat electronegative, forming ions with a -2 charge.

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