The atomic mass of an element is 32.07 u and its atomic number is 16. the element forms a simple ion. the ion will most likely have a charge of
(a) 1–
(b) 2–
(c) 3+
(d) 1+

Sulfur has mass of 32.07 u and its atomic number is 16. 
Sulfur usually is on -2, +4 or +6 level of oxidation (but it can be also on 5, 3, 2, 1, -1 ).

Out of given choices (B) is the most likely one.

The answer is letter c

It is 4.92 e-4 sorry if i am wrong