Final answer:
A basilica is a type of building that Christians borrowed from the ancient Romans. It is longitudinal and has an entrance on one end, opposite to which is the apse, the holiest part of the church.
Step-by-step explanation:
A basilica is a type of building that Christians borrowed from the ancient Romans. It's longitudinal and has an entrance on one end, opposite to which is the apse, the holiest part of the church. The basilica design was used in early Christian architecture after their persecution ended in the fourth century, and it became a distinctive architectural style for Christian churches.