Answer:
MONOPSONY
Step-by-step explanation:
Monopsony is a labour market form where a firm is a singe buyer of a kind of labour services. Eg : Primary or only supplier of a kind of job in an area. These are at a priviliged position - wage setting power, more bargaining power with labourers (for wages , employment terms & conditions).
Monopoly is a commodity market structure where firm is the only seller of that good/service, with no close substitutes. Eg - Indian Railways. Perfect Competition is a also a commodity market structure with many buyers & sellers selling homogeneous products at uniform prices.