Lymph

a. returned to the circulatory system at the subclavian vein.
b. returned to the circulatory system via arteries.
c. excreted by the kidneys.
d. excreted as sweat.
e. absorbed by tissues.

Option- A : The option A is the best to choose from the given four, we have the further explanation as below;

Lymph:"It is pale fluid that bathes the tissues of an organism, maintaining fluid balance, and removes bacteria from tissues."

Explanation:

The lymphatic system helps maintain fluid balance in the body by collecting excess fluid and particulate matter from tissues and depositing them in the bloodstream.

The lymph returns to the circulatory system at the sub-clavian vein. There are paths(trunks) for lymph to get back into the circulatory system.One of these trunks, the right lymphatic duct, drains the upper right portion of the body, returning lymph to the bloodstream via the right subclavian vein

b is dominant over the allele for the white fur.