The following diagram shows various positions of the moon in

its orbit around Earth. The image of the moon shows its phase as seen from Earth

In which position will one fourth of the illuminated side of the moon be visible from Earth?
A
B
C
D
(I'm indecisive about A and D, so I'm not sure which one is correct)

D.

If you have scratch paper and draw it out, it would greatly help you. A different way would be to visualize it in your head. Behind the Earth is Full moon, in front is new moon, above/below is half/gibbous. To the right of below is 3/4. To the left of below is 1/4. To the right of above is also 3/4. To the left of above is 1/4

the answer to your question is sperm

not sure if this is what you'r looking for eubacteria and archaebacteria