A cold pack is snapped, and the chemical reaction causes the pack to feel cold. Which kind of reaction

Question

is this? (1 point)
This is an endothermic reaction because the system took energy from the surroundings.
This is an exothermic reaction because the system took energy from the surroundings.
This is an exothermic reaction because the surroundings took energy from the system.
This is an endothermic reaction because the surroundings took energy from the system.

Answer 1

This is an endothermic reaction because the system took energy from the surroundings.