Answer:
The clinical trial show efficacy and safety.
Explanation:
There are tests that are done to make sure that the drug, vaccine, etc. works. The effectivness is called efficacy. In order for a drug to be apporved it has to be safe and effective. If it fails this test, it is not approvable.
<span>The study of respiratory diseases falls under the field of
c. pulmonology.
</span>
If you really wanted to there are indoor air filter machines that you can buy to help clean the air, (I have one of these) also frequently dusting you house with an approved cleaner can stop allergy's as moving around can cause dust to go flying around. Now if this is a humidity problem you can buy a humidifier, now the hot air humidifiers are not good so your best bet would be to get a cool air humidifier witch uses high speed movement to create humidity. (I also have one of these)
Cinnamon Toast
1 to 2 slices of bread
butter & cinnamon
toaster( or skillet)
toast for about 30 seconds to a minute
Frozen Waffles
butter(optional) syrup
toaster/ microwave
cook for about 1 to 2 minutes
The answer is b. Hope this helps.