Which of the following is a common symptom of hypothyroidism?

Cold intolerance is a common symptom of hypothyroidism due to the reduced metabolic rate that occurs when thyroid hormone levels are low. Thyroid hormones play a critical role in regulating metabolism and energy levels in the body. When there is insufficient hormone production, the body's ability to generate heat diminishes, leading to feelings of being cold, especially in temperate or cool environments.

In contrast, excessive energy is typically associated with hyperthyroidism, where elevated hormone levels increase metabolic rate and energy levels. Weight loss, while a symptom of hyperthyroidism, does not align with hypothyroidism, which often leads to weight gain due to a slowed metabolism. Additionally, an increased heart rate is also common in hyperthyroidism as the body responds to elevated thyroid hormone levels; in hypothyroidism, the heart rate typically slows down due to the decrease in metabolic processes.