The element with maximum electronegativity belongs to:

We are aware that the electronegativity of atoms or elements rises from left to right in the periodic table.
The electronegativity of atoms or elements increases from bottom to top.
Fluorine, one of the alternatives, is in group VIIA, the rightmost and highest element with the greatest effective nuclear charge; as a result, it will have the greatest electronegativity. Hence, the maximum electronegativity belongs to period 2, group 17. Thus, the option A is correct.