The fbi uses hogan's alley to
o provide agents a place to stay when they are off duty and visiting fbi headquarters
o provide agents "on-the-ground" training and experience in conducting building-to-building searches
o provide agents an opportunity to locate and arrest actual convicted criminals
teach agents how to read maps

Provide agents "on-the-ground" training and experience in conducting building-to-building searches

Explanation:

The primary role of Hogan was to offer training to the agents. The practice, therefore, involved learning essential tactics that will enable them to handle stressful situations when they were required to use them. For instance, when carrying out investigations, some tactics are needed to get the correct evidence.

This is the reason where the agents were given the training to ensure their studies were successful and valid. When attacks the terrorist the agents needed specific tacts to protect themselves and that exactly Hogan was offering.

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

hope it : )

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.