Explanation:
H2S is the limiting reagent
H2S= 1/8 (least value)
O2= 1/4
If it's an endothermic reaction, then that means heat is being added to the system therefore H>0. Entropy is disorder, and since there are more moles on the products side, entropy is increasing therefore S>0 as well.
The answer would be Groups, or also known as families.