Complete the analogy:

Heart : Circulate :: Lungs : ?

The logic followed here is:

Logic: The first organ performs the function described by the second word.

Here,

Heart : Circulate → The Heart's primary function is to Circulate blood throughout the body.

Similarly,

Lungs : Breathe

The primary function of the Lungs is to facilitate respiration, which is to Breathe (taking in oxygen and expelling carbon dioxide).

• Breathe: The main function of the lungs.
• Digest: Function of the digestive system (e.g., stomach, intestines).
• Excrete: Function of the excretory system (e.g., kidneys, skin).
• Vision: Function of the eyes.

Hence, the correct answer is "Option 1".