Answer:
The correct answer is hot site.
Step-by-step explanation:
A hot site is a site where a company's operation can take place after a disaster. it is a duplicate of the original site and is situated at an off-premises location. It is a backup site which has all the equipment that is required to continue operations. it is always online and immediately available.
A warm site has lesser equipment than a hot site and requires more time to be operational. A cold site has the least equipment and takes a few days to be operational but is the cheapest alternative.
Since the company here wants the business to resume in the least time it should go for a hot site.