the correct word would be optimism
I agree, because you should be able to take care of yourself, that means that you should get shots (Flu, rabbies) , you should also eat healthy.
The esophagus, which passes food from the pharynx to the stomach, is about 25 cm(10 inches<span>) in length; the width varies from 1.5 to 2 cm (about 1 inch). The esophagus lies behind the trachea and heart and in front of the spinal column; it passes through the diaphragm before entering the stomach.</span>
Really, none of these answers are good. leukocytes are the body's general immune cell, and lymphocytes are a type of leukocyte. Antibodies are only used when fighting an infection that your body already has experience with, so I'm guessing it you have to pick from these answers, its "lymphocytes", but it's not really the best answer.
The office should have
1. hazard on communication signs example risk of electric shock.
2.Emergency exit routes which is well labeled example exit door.
3.office with ionization ration
4.office with well effective and medical device designed to eliminate or minimize bloodborne pathogens.