Question

as the sun changes, how will the orbits of the planets change?
they will start to spin more quickly around the sun.
their orbits will expand outward and away from the sun.
they will be pulled inward towards the core of the sun.
they will fall out of orbit entirely, spinning off into the milky way.

Explanation:

The Sun loses mass over time (via nuclear fusion and solar wind), reducing its gravitational pull. Per orbital mechanics, weaker gravity means planets’ orbits gradually expand outward to maintain stability. Other options are incorrect: faster spin contradicts orbital speed decreasing with distance; inward pull would require increased Sun mass; falling out of orbit entirely is not a gradual effect of Sun’s normal changes.

Answer:

B. Their orbits will expand outward and away from the Sun.