According to the Characteristics of Stars graph in the reference tables, the Sun is classified with which of the following types of stars? 1.Supergiants
2.Giants
3.Main sequence
4.White dwarfs

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.