Which of these does not cause seasonal change? A. the tilt of the Earth’s axis
B. the Earth’s orbit around the sun
C. the Earth’s distance from the sun
D. which side of the Earth is tilted toward the sun

C.the Earth’s distance from the sun

Explanation:

Distance Does Not Cause Seasons

It is a common misconception that seasons occur because of Earth's elliptical orbit around the Sun, with winter occurring when Earth is farthest away from the Sun, and summer when it is closest to it. However, our planet's distance from the Sun has little effect on the onset of seasons.

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.