Which one is the right spelling?

1. Correct Spelling: The term "assassination" refers to the act of deliberately killing someone, usually a prominent figure.

2. Double 's': The correct spelling includes two 's' after the prefix 'assas-' to accurately represent the pronunciation and maintain consistency with the word's standard spelling.

3. Common Mistakes: Incorrect spellings, such as "assasination" (গ) and "assassinasion" (ঘ), deviate from the standard spelling and are not accepted in English.

In summary, option খ correctly follows the spelling rules for the word "assassination" and avoids common mistakes associated with its incorrect spellings.