Alarge area in a semi-dry climate has been greatly affected by a decrease in rainfall over the last several years. this area is in danger of

2b2t

explanation:

2b2t

the answer your looking for is c).

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.