The presence of which element would indicate that a star is going through a high-mass star life cycle as opposed to a low-mass star life cycle? a)hydrogen b)carbon c)helium d)iron

Answer;

D. Iron

Explanation;The life cycle of a star is determined by its mass. The larger the mass the shorter its life cycle will be. Despite a number of similarities between the high-mass star life cycle and the low-mass star life cycle, there are some differences between the two. One difference is the presence of iron element. A high mass star after burning hydrogen to helium, Helium to carbon, it will also burn carbon into other heavier elements such as neon, magnesium, oxygen and may go all the way to form Iron, where the nuclear fusion stops.Low-mass stars on the other hand will burn hydrogen to helium at a slow rate and will also burn Helium to carbon but are not capable of fusing carbon any further.

This type of galaxy is an approximately ellipsoidal shape and a smooth, nearly featureless image. they are the largest single star systems, in the universe and are built by the collisions of many smaller galaxies.