I think it is A correct me if i am wrong hope this helps
It is harmful because you can get burned easy and your clothes can get dirty.
K will always have an oxidation state of +1. Now O is -2 except in peroxides, this is not a peroxide, so total charge will be -6, if you subtract the +1 of K from it, it leaves -5 charge to be neutralized by Cl in KClO3, so Cl will be +5. In the product side, K will still have the same oxdiation which is +1 and Cl would have -1. O2 will have zero. <span>Now, Cl is gaining the electrons to go from +5 to -1, so it is getting reduced while O2 is losing electrons to go from -2 to zero so it is getting oxidized.</span>
The more sunlight that is present, the better the oven will be able to produce electricity. This means that a solar oven will be more efficient on a sunny day than on a cloudy day. Also, depending on the time of day, if the solar panel is in shadow, the oven will greatly decrease in efficiency.
