Choose the appropriate preposition in the blank of the following sentence: Eight men were concerned ____ the plot.

Complete sentence: Eight men were concerned in the plot.
বাংলা অর্থ: আট জন লোক গোপন পরিকল্পনাটিতে জড়িত ছিল।

Concerned in: involved in something; কোন কিছুতে জড়িত থাকা।

Concerned for/about: worried or nervous about something; উদ্বিগ্ন হওয়া।
Example: I'm a bit concerned about/for your health.

Concerned with: interested in, in a context; আগ্রহী।
Example: Today's lesson is concerned with punctuation.