Chemistry, please help

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

Answers are 1,2,4 its correct on edgenuity.

Answerlimiting reactant;

The answer is:   [d]:   "ultraviolet" {"  uv  "} .