Final answer:
A one-to-many relationship is a relationship between two tables where one record in the first table corresponds to many records in the second table.
Step-by-step explanation:
The answer to the question is A) one-to-many. In a one-to-many relationship, one record in the first table can correspond to many records in the second table. This type of relationship is commonly used in database design to connect related data. For example, in a database of students and their courses, one student can be enrolled in multiple courses.