The answer is reduced. In a redox reaction, the reduction is the gaining of a proton in a reaction or losing of electrons while oxidation is the gaining of electrons or losing of a proton. In other words, it is the transformation in the oxidation number between the reactants and the products. Carbon dioxide in photosynthesis gains protons (hydrogen) from water molecules hence it is reduced. See reaction below;
6CO2(g)+24H++24e−→C6H12O6(aq)+6H2O(l)
Evaporation is the process of changing a liquid into its vapor stage.
The word “evaporation” is specifically used when the vaporization
happens from the surface of the liquid. Liquid vaporization can also
happen at the boiling point where evaporation happens from whole liquid
mass, but then it is not called as evaporation. Evaporation can be
influenced by various factors like concentration of other substances in
the air, surface area, pressure, temperature of the substance, density,
flow rate of air etc.
Most likely White or another color that appears "bright" to us, such as gold, silver, yellow, pink, or sometimes green. Hope it helped!