Question

in the diagram given, what happens as we move to the left?
stars get larger
stars get hotter
stars get colder

Explanation:

The problem is about stellar properties (stars' size/temperature) in a diagram, likely related to the Hertzsprung - Russell (HR) diagram in astronomy (a subfield of Physics, which is under Natural Science). In the HR diagram, moving left typically means stars get hotter (since temperature increases towards the left on the horizontal axis representing temperature or spectral class). So the correct option related to moving left is "Stars get hotter".

Answer:

Stars get hotter