Please explain the following 25th question with reason.

Dear Student,
25.
For conversion of galvanometer into ammeter one should use a low resistance called shunt resistance in parallel to galvanometer (option d).
A galvanometer can detect only small currents, thus to measure large current it is converted into ammeter. 
Hence, a low resistance called shunt resistance can be connected to a galvanometer in parallel to convert it into ammeter.
Regards

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