Select the most appropriate option to fill in blank no.5.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. cause.
The meaning of the given words is:
- Plan: a detailed proposal for doing or achieving something.
- Motive: a reason for doing something.
- Agency: action or intervention producing a particular effect.
- Cause: a person or thing that gives rise to an action, phenomenon, or condition.
The given blank requires the root or the origin of the mechanic failure.
Thus, the correct sentence will be:
.....before they could find the cause of the mechanical failure.