Multiple choice Directions: Click the option that substitutes the given word/phrase. Organ of sight ark arc aye eye Reveal answer Fill a bubble to check yourself D Correct answer Explanation The 'eye' is the organ of sight in humans and animals. The other options are incorrect: 'ark' is a boat or chest, 'arc' is a curved line (part of a circle), and 'aye' is an affirmative response (meaning 'yes').