The accompanying diagram can be used to illustrate a process
directly involved in

A: tissue repair

Explanation:

the 46 in the cell was a giveaway that it is not meiosis so B and D are not correct. mitosis is the process of cell division that includes body/somatic cells. the diagram shows a cell being duplicated and the process in the middle looks similar to cytokinesis

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme