How does the track of a Red Giant appear on the Hertzsprung-Russell (H-R) diagram?

Answer

Sharply upward and to the right

The upward movement signifies increased luminosity, and the movement to the right signifies lower surface temperature, corresponding to the larger, cooler surface of the giant star.

How does the track of a Red Giant appear on the Hertzsprung-Russell (H-R) diagram?
starstellar evolutionexpansionhydrogen fusionhelium fusion