It would be the pubis bone.
I think the answer is 3 or 2 i
Answer: If the Euglena is kept on the wet mount and it is sliding towards the left on the mount then to observe the Euglena in the microscope it wet mount should be slide towards right.
The movement of Euglena can be slowed down doing this. This will help us to observe it under microscope inspite of its movement.
Compound microscope is used to view Euglena.
