As glucose concentration increases, the rate of respiration increases indefitely
decreases until a saturation point is reached and the rate levels off.
increases to an optimal point before decreasing again.
increases until a saturation point is reached and the rate levels off.

c is the correct answer hope this !

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

what are the options