multiple - choice question\nchoose the item with the highest electronegativity\nhe (helium)\nga (gallium)\ns…

Explanation:

Step1: Recall electronegativity trends

Electronegativity increases across a period and decreases down a group in the periodic table. Helium is a noble - gas and has a stable electron configuration, so it does not readily attract electrons. Gallium is a metal in Group 13 and has relatively low electronegativity. Sulfur is a non - metal in Group 16.

Step2: Compare the elements

Among the given elements, sulfur is the most non - metallic and has a higher electronegativity compared to gallium (a metal) and helium (a noble gas which has little tendency to attract electrons).

Answer:

S (sulfur)