A. One must do once duty proparly.
A.
B. One must do ones duty properly.
B.
C. One must do one’s duti proprly.
C.
D. One must do one’s duty properly.
D.
Correct Answer: D
সঠিক উত্তর: D
Explanation
ব্যাখ্যা
The possessive form of "one" is "one’s," not "ones" or "once."
"Duty" is spelled correctly, and "proparly" should be corrected to "properly."