I believe the correct answer is homeostasis.
Gross motor skills involve large muscles in the arms legs and torso. The general guidelines for gross motor development for children 4 years of age include running, jumping and climbing well and control their direction. They can hop on one foot and they start to skip at this age. At this stage, they are also able to ride a tricycle and reliably catch a ball.
The answer to your question is 4.
It would be C. because the student is using different amounts of fertilizer in each container
The rate and direction of reactions are greatly influenced by the Law of Mass action or molecular concentration because they relate to the same principle