The parasitic Loa loa worm can cause great pain when it:

moves through the bloodstream

exits through the skin of the foot

travels through the conjunctiva

enters the digestive tract

The correct option is : c. travels through the conjunctiva

Explanation:

Loa loa worm is a roundworm that is responsible for causing the eye and skin disease called Loa loa filariasis. This worm is commonly known as the eye worm, as it is localized in the conjunctiva of the eye.

Loa loa does not normally affect the vision of an individual but when the worm moves across the bridge of nose or around the eyeball, it can cause severe pain.