Please help me with the following ASAP;

' Use the graph to answer the question that follows. 2. What is the most likely goal of a government that enacts a perunit subsidy? To increase market competition To correct for a positive externality To correct for a negative externality To encourage production of private goods To increase prot and encourage production Price [$) Q' Q' Gm\"? Without government intervention, this market will charge a price 0 lower than optimal by PC 0 higher than optimal by P\" 0 lower than optimal by PC PE 0 higher than optimal by P\" DE 0 lower than optimal by PC PP