Question :
In the question given below, a sentence is given with two blanks, followed by five options, each having words or phrases which may or may not fit in the blank. From the given options, choose the one that gives the correct words/phrases that fit in the blank.
While far from being a silver bullet, the _______________drones with thermal-imaging technology is one solution ________________ monitor ecosystems for signs of poaching or illegal logging.
1. stationing of, offended to
2. use of, crawled to
3. deployment of, proposed to
4. utilise of, intended to
5. employment on, expected to