PERCH
1) a thing on which a bird alights or roosts, typically a branch or a horizontal rod or bar in a birdcage.
2) (of a bird) alight or rest on something.
3) an edible freshwater fish with a high spiny dorsal fin, dark vertical bars on the body, and orange lower fins.
4) a linear or square rod.
Those are all the definitions. Whichever one relates to what you're learning.
A i believe because i think i did this test before
The answer is B. [Im]perceptible means [not] perceivable, and to perceive is to understand.
Hope this helped!
