Which form of genetic material initiates rna interference? a) double-stranded dna b) double-stranded rna c) single-stranded dna d) single-stranded rna

The correct answer is option B, that is, double-stranded RNA.  

An RNA-dependent gene silencing procedure known as RNA interference is mediated by the RISC (RNA-induced silencing sequence) and is stimulated by the molecules of short double-stranded RNA in a cytoplasm of the cell where they associate with the argonaute, that is, a catalytic RISC constituent.