Question

in an H-R diagram, most stars are found in a diagonal band from the upper left to the lower right, which is called the

Answer 1

The correct answer is main-sequence stars.
This type of stars refers to dwarf stars, which are the most numerous in our galaxy. In fact, even our Sun is thought as a main-sequence star. Their primary characteristic is that hydrogen atoms are fused in their cores so as to create helium atoms.