Which structure in the celery plant was most likely responsible for making the leaves turn red? phloem
pollen
embryo
xylem

you paid for the subscription lol

i think the answer is a or d

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.