The thoracic duct drains lymph from the right upper limb and the right side of the head, neck, and thorax.
a. true
b. false

False.

Explanation:

Thoracic duct may be defined as the large lymphatic duct of the lymphatic system. This duct is also known by the name as Van Hoorne's canal.

The right lymphatic duct is responsible for drain the lymph from the right upper limb and right side of head, thorax and neck, not the thoracic duct. The thoracic duct contains lymph and fat.

Thus, the answer is false.