Select the most appropriate option to fill in the blank.
The Armenian language has many dialects, some of which cannot be ______ by speakers of other dialects.

Correct option is A

The correct option to fill in the blank is (a) understood.
‘Understood’ is the past participle of “understand,” meaning to grasp the meaning of something. (समझना)
The sentence logically states that some dialects are not comprehensible to speakers of other dialects.
Example: Some regional accents are hard to understand even for native speakers.
Meanings of other options and why they are incorrect:
· (b) Realised – To become aware (एहसास करना); not relevant to language comprehension.
· (c) Memorised – To learn by heart (याद करना); doesn't fit contextually.
· (d) Completed – To finish something (पूरा करना); unrelated here.