A(n) facility is one in which security is based on staff involvement, where doors are often not locked, and there is no perimeter fencing or walls.

An open facility is one in which security is based on staff involvement, where doors are often not locked, and there is no perimeter fencing or walls.

Explanation:

As it is stated, there are some open facilities, which rely on no other security measure than staff involvement, such as security guards who control the area. An example of open facility can be a public building which is available at all times during the day such as a library, a museum, etc.

i dont know but thats a great qusestion

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.