প্রশ্ন: One of the most significant phenomenon of out time has been the development of cinema.
(ক) Phenomenon
(খ) Phenomena
(গ) Phenomenonna
(ঘ) Phenomenonns
ব্যাখ্যা:
Rule: one of the + plural noun লাগে। তাই phenomenon নয়, plural form phenomena ব্যবহার করতে হবে।