The correct option is D Nayankara
The Nayakas were given several villages from where they could collect
taxes. These villages were called their Nayankara. Each nayaka had to
maintain a stipulated amount of army, from the income they derived
from the nayankara, for the service of the king. But they did not keep
these villages permanently as they could be transferred at the
will of the king to a new place.