I could not go in for the examination due _______ rain.

• Due to (phrase)
English Meaning: because of.
Bangla Meaning: কারণবশত।

Complete Sentence: I could not go in for the examination due to rain.

Example Sentence:
1. A lot of her unhappiness is due to boredom.
2. The bus was delayed due to heavy snow.
3. Regrettably, the service has been dropped due to a lack of funding.

Source:
1. Cambridge Dictionary.
2. Accessible Dictionary by Bangla Academy.