Final answer:
Mutual Property Insurance Company can safely write new net premiums of $20 million.
Step-by-step explanation:
The conservative rule in insurance is that an insurance company should have a surplus of at least 10% of its net premiums written. In the case of Mutual Property Insurance Company, with a surplus of $2 million, they can safely write new net premiums of $20 million. This is because 10% of $20 million is $2 million, which matches their surplus. Therefore, Mutual Property Insurance Company can safely write new net premiums of $20 million.