Which factor is difficult to assess in a cost–benefit analysis? a. product being used by everyone b. the aesthetic value of nature c. identifying internal costs d. categorizing internal and external costs

i it is d i hope it

its d lol

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it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

i believe your answer would be c.. : )