An R-134a thermal expansion valve system contains the proper refrigerant charge. During a system perfor- mance test, the low-side gauge reading is 40 psig and the high-side gauge reading is 140 psig with an ambi- ent air temperature of 878F (30.558C). Which of the fol- lowing is the most likely cause of these results

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

its c i just checked it

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.