Mrs. Hernandez brought her pet bird to school one day to find out what her students understood about forces. As the bird rested on a perch, Mrs. Hernandez asked her students to describe any forces acting on the bird. This is what some of her students said: Bob: The only force acting on the bird is gravity.

Chelle: The only force acting on the bird is air pressure.

Fred: There are no forces acting on the bird because the perch stops any forces from acting on it.

Omar: There are many forces acting on the bird. The bird is held in place by the force of the branch.

Katrina: The force of gravity pulls down on the bird while the branch pushes up to support the bird.

Which student do you most agree with?

Explain your thinking. What reasoning did you use to decide what forces were acting on the bird? (WILL GIVE BRAINLIEST!!!)