Dusk sets in at the Varagaliar elephant camp deep within the Anamalai Tiger Reserve (ATR). It's dinner time for the 25-year-old tusker and he's (1)______ balls made of steamed ragi flour mixed (2)______ some rice, green gram, salt and jaggery. (3)______ are half-a-dozen Forest Department (4)______ around, including V. Ganesan, the Field Director (5)______ ATR.
Select the most appropriate option to fill in blank No.(4)