Which compound has the highest melting point?
a) octane (c8h18), a molecular compound
b) carbon dioxide (co2), a common gas
c) water (h2o)
d) silicon carbide (sic), a network solid

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but