The caruncle is the: a. duct which carries tears onto the eye. b. duct which drains tears into the nose. c. place where aqueous humor drains from the eye. d. red triangular tissue at the inner corner of the eye.

The correct answer will be option-D.

Explanation:

The caruncle of the eye is also known as the lacrimal caruncle which is characterized by the globular nodule in the inner corner of the eye.  

The caruncle is made up of the skin which covers the sweat glands, sebaceous glands, hair follicles and the accessory tissues of the eyes and appears like a small pink nodule. The caruncle does not directly affect the vision of the eyes so are less studied by the ophthalmologists.

Thus, option-D is the correct answer.