Answer:
The correct answer is oxygen.
Explanation:
An atom refers to the smallest constituent of an element, which holds all the chemical characteristics of that element. Each element exhibits a familiar electronegativity, that is, a measurement of their affinity towards electrons. In the molecule of water, the element oxygen is very electronegative as it robustly fascinates electrons from other atoms. On the other hand, hydrogen has low electronegativity and therefore, attracts electrons weakly.