Answer:
The statement that is true about leukotrienes is that they create excess mucus in the airways (last option).
Explanation:
Leukotrienes are inflammatory mediators, derived from arachidonic acid, in whose presence occurs increased vascular permeability in tissues, leading to inflammatory processes.
The presence of leukotrienes has been related to the development of allergic reactions, mainly in the respiratory tract, producing edema in the mucosa, contraction of the smooth muscles of the airways and increased production of mucus 
in the airways.
the other options are not correct because leukotrienes:
- <em>Produce contraction of the smooth musculature around the airway.
</em>
 - <em>Are related to the production of bronchial asthma.
</em>
 - <em>Are inflammatory (chemical) mediators. </em>
 
 
        
             
        
        
        
Neurotransmitters? im not 100% sure
        
                    
             
        
        
        
Answer: Staying up late is rather tempting and can be ever so weary. However, I fight the temptation and grasp what will I have to overcome it and go to bed on time. 
Explanation:
 
        
                    
             
        
        
        
The answer is option A. Fad diets are just that, a "fad" or phase in dieting that an individual will try for a short amount of time, which will consequently only to return them to their typical behavior. Restricting caloric intake along with a proper, preferably fun or shared physical activity that is not only achievable but may be built upon as one progresses. Drinking water before meals will also decrease an appetite as well as increase one's ability to digest and discard foods more efficiently.