Silencing of mRNA has been used in producing transgenic plants resistant to _____________.

The correct option is A White rusts
●The introduced DNA produced both sense and antisense RNA which were complimentary to each other and formed dsRNA.

●This RNA interference caused silencing of nematode-specific mRNA and was lethal for the survival of nematode in tobacco root cells.

●Transgenic tobacco plants were nematode resistant due to RNA interference.

So, here (D) nematodes is the correct answer .