The full scientific name of this chemical compound is quite lengthy, like most scientific compound names..
(Dichlorodiphenyltrichloroethane)
The easiest way to pronounce it is to use this
dahy-klawr-oh-dahy-fen-l-trahy-klawr-oh-eth-eyn
I think its B. a commensality relationship
For the first question the answer is D. Systemic
For question number 2 the answer is B. Lungs