It would be convection because it isnt having any physical collision which rules out conduction and it is going through mid air which rules out evaporation and radiation
I am pretty sure the answer is D (combination)
I'd think it's probably the recycling of newspapers, as trees are making of paper can be a reason for deforestation. With recycling of newspapers, fewer trees need to be cut down.
Answer: The statement that best describes cancer cells is option D.
