Deficiency of Which Nutrient Can Cause Muscle Cramps, Irregular Heartbeat

Question

Deficiency of which nutrient can cause muscle cramps, irregular heartbeat, or paralysis?
A) potassium
B) sulfur
C) iron
D) copper

Accepted Answer

Potassium deficiency can cause muscle cramps, irregular heartbeat, and even paralysis as it is an important nutrient for muscle and heart function.