The reason ________ the disaster was engine failure, not human error.

For

Off

None of the above

Reason for the disaster means سانحے کی وجہ

Important formations of Preposition:

Battle + against is the correct formation.

Admit + to is the correct formation.

Serve + on is the correct formation.

Averse + to is the correct formation.

Addicted + to is the correct formation.

Accustomed + to is the correct answer.