"in which deployment model does the company own all devices, issue whichever device it chooses to a given employee, and retain control of which apps are installed? "

Company Owned/Business Only (COBO)

Explanation:

Based on the information provided within the question it can be said that the deployment model that is being described is called COBO or Company Owned/Business Only. This is a business model that largely surfaced when mobile devices started taking off. This business model supplies workers with company owned devices and restricts the hardware for business use only.

what are the choices? the multiple choices?

i will answer in the comments after the choices have been said.

answer; by working independently, the states have a high likelihood of developing innovative solutions that can be employed in other states;