Answer:
here the coil must be oriented in such a way that its plane is perpendicular to the magnetic field
Step-by-step explanation:
As we know by Faraday's law of electromagnetic induction
Rate of change in magnetic flux will induce EMF in the coil
so here we will have

here we know that

now if the magnetic flux will change with time then it will induce EMF in the coil

so here induced EMF will be zero in the coil if the flux linked with the coil will remain constant
so here the coil must be oriented in such a way that its plane is perpendicular to the magnetic field
In such a way when coil will rotate then the flux linked with the coil will remains constant and there will be no induced EMF in it