Thanks for the question. Before I start giving you the tips I would like to explain you about business development.
What's business development?
Developing business using available resources is called business development and to do the required task you need to know basic research tools and Little idea how to get the information using online tools and of course communication must be able to put the message across clearly, that's it you will be a Robinhood of business development!
Tools required to reach the RPC (Right Party Contact) like LinkedIn, Fb etc by using different modes of communication like E-mail campaign's, Cold calling or by using social media (Digital marketing) technics, I think this will help you crack any business development interview.