reactions transfer energy to the surroundings, usually as heat.\na decomposition\nb endothermic\nc…
reactions transfer energy to the surroundings, usually as heat.\na decomposition\nb endothermic\nc exothermic\nd synthesis
Answer
Brief Explanations:
Exothermic reactions release energy to the surroundings, often in the form of heat. Endothermic reactions absorb energy. Decomposition and synthesis are types of chemical - reactions based on reaction patterns, not energy transfer type.
Answer:
C. Exothermic