is a market failure that the government might seek to change through intervention

A positive externality, negative externality and asymmetric information

Explanation:

A market failure is one of the type of economical situation in which the  the various types of products and the services are distributions in an inefficient manner.

A positive externality, negative externality and an asymmetric information are the market failure that the government wants to change by the process of intervention

Externality is one of the type of advantage or cost that basically affect the third party in the economics so the free market under consuming the various types of products. Therefore, the given answer is correct.  

exaclty 30 degrees celcius is the answer

i guess you could put raise the economic balance