Choice B is correct.
Solar energy charges the battery or cell; it is then powered through the wires and light comes and heat.
But if the lamp they are talking about doesn't have wire the choose C.
But I am certain it is B
Because for men, the gene is dominant, and for women, it is recessive, thus a man only requires one allele for baldness to occur, and a woman must be homozygous for the trait.
Control of density dependent limiting factors best describe the advantages of food processing.