Question

in database terminology, a record represents
a a list of data, arranged in columns and rows.
b all of the data in a given column
c a single instance of whatever the table keeps track of.
d a field or combination of fields used to uniquely identify a file.

Explanation:

In database terminology, a record is a single instance of whatever the table keeps track of. For example, in a table of students, each record would represent one student. A list of data arranged in columns and rows (A) is more like a table. All of the data in a given column (B) is a field. A field or combination of fields used to uniquely identify a file (D) is a key.

Answer:

C. a single instance of whatever the table keeps track of.