Final Answer:
Boosting the immune system and preventing illnesses involve various practices, and all the statements mentioned contribute to this goal.
thus correct option is 4) All of the above
Step-by-step explanation:
Boosting the immune system and preventing illnesses involve various practices, and all the statements mentioned contribute to this goal. Moderate exercise enhances immune function, reducing the risk of colds. Regular hand washing with warm water and soap is effective in eliminating germs, preventing the spread of illnesses. Additionally, replacing used sponges and rags helps avoid harboring harmful bacteria, reducing the risk of infections.
Together, these practices—exercise, hand hygiene, and cleanliness—work synergistically to bolster the immune system and minimize the chances of falling ill. Therefore, considering the holistic approach toward immune health, all the statements are true and play vital roles in fortifying the body's defenses against illnesses.
thus correct option is 4) All of the above