Unlike the sun, stars of at least three solar masses __ (Choose all that apply). continue to fuse elements beyond carbon, all the way up to iron. D have life spans billions of years longer than smaller stars. D end their lives as white (and eventually black) dwarfs. end their lives with a supernova.

## Step 1<br />The problem is asking us to identify the correct statements about stars of at least three solar masses. We need to evaluate each statement based on our knowledge of stellar evolution.<br /><br />## Step 2<br />The first statement is "Stars of at least three solar masses continue to fuse elements beyond carbon, all the way up to iron." This is true. Stars with at least three solar masses have enough mass to overcome the repulsion caused by the fusion of elements heavier than carbon, which requires extremely high temperatures and pressures. This allows them to fuse elements up to iron.<br /><br />## Step 3<br />The second statement is "Stars of at least three solar masses have life spans billions of years longer than smaller stars." This is also true. Larger stars have shorter life spans due to their high mass and temperature, which leads to faster nuclear fusion. However, stars with at least three solar masses have a longer life span because they can fuse elements up to iron, which takes a long time.<br /><br />## Step 4<br />The third statement is of at least three solar masses end their lives as white (and eventually black) dwarfs." This is not true. Stars with at least three solar masses do not end their lives as white or black dwarfs. Instead, they end their lives in a supernova explosion, leaving behind a neutron star or a black hole.<br /><br />## Step 5<br />The fourth statement is "Stars of at least three solar masses end their lives with a supernova." This is true. Stars with at least three solar masses end their lives in a supernova explosion. This is because they have enough mass to overcome the repulsion caused by the fusion of elements heavier than carbon, which requires extremely high temperatures and pressures.