<span>The
answer is a fecal occult blood test (FOBT) that checks for hidden (occult)
blood in the stool (feces) by use of a microscope. The major disadvantage is that it is not very
accurate because it is not a 100% reliable as an indicator of colorectal
cancer. Sigmoidoscopy is often undertaken following a positive FOBT</span>
Answer:B- drains excess instertial fluid
Explanation:lymphatic system is a network of drainage that helps keep bodily fluid levels in balance.
Lymphatic system helps in conduct of lymph and also protect the body against infections.
It is made up of a network of lymphoid organs, lymph nodes, lymph ducts, lymph tissues, lymph capillaries
The lymphatic system, Functions by absorbing fluids that could leak from capillaries.
They also Absorb fatty acids and aid transport of fat to the circulatory system. Production of immune cells (such as lymphocytes, monocytes, and antibody producing cells called plasma cells)are done by lymophocytes
