Salt is good for you in small quantities because sodium, part of salt, is required to maintain your blood pressure and is important for your neurological system. However too much can be bad for you because your body will become dehydrated as salt absorbs water.
Vaccination has been one of the most successful developments of medical science because for centuries it has been proven effective in diminishing the number of people at risk on certain kinds of diseases. How does vaccination help? Vaccines are contained weakened organisms that are injected to the body. This then boosts the immune system as they release a certain type of cells to combat with the foreign organisms. When the person is exposed to the same organisms again, he/she will develop immunity.
I think the answer is C. Pharmacy technicians.
Evaluating your skills is a key component to a successful physical activity action plan. Assessing yourself through physical tests (e.g. weight and girth measurements) could give you an idea what exactly you want to happen in your training program. Aside from knowing your structure, you should also assess yourself if you are fit enough or you have certain medical conditions that would prohibit you from performing certain activities (e.g. high blood pressure, hypertension).
In doing so, you not only ensure the success of your training action plan, but you also secured your safety before executing the activities you assigned for yourself.