Question

select the best options for the question below
what are the two opposing forces that are being represented in the model of the sun core?
magnetic force pulling in
nuclear pressure caused by nuclear fusion pushing out
gravitational force pushing in
heat energy and pressure caused by nuclear fusion pushing out

internal force pushing out

Explanation:

In the context of star (like Sun) stability, the two opposing forces are gravitational force (pulling inward, trying to collapse the star) and the force from heat, energy, and pressure created by nuclear fusion (pushing outward, balancing gravity to keep the star stable). So we identify the options related to these: "Gravitational force pulling in" (inward force) and "Heat, energy and pressure created by nuclear fusion pushing out" (outward force). The other options: "Magnetic force pulling in" is not a main opposing force here, "Mass and pressure..." (incorrect as mass isn't a force pushing out, and wording is off), "Inertial force..." is not the main balance force.

Answer:

• Gravitational force pulling in
• Heat, energy and pressure created by nuclear fusion pushing out