Read the dictionary entry.
designate /de-ziɡ-ˌnāt/ verb
to give someone a role or purpose to give someone a name or title to be used as a name for designate
/de-ziɡ-nət/ adjective
appointed to an office but not yet installed
Which sentence uses designate as an adjective?
A. Mrs. Jones designated Julia as the Financial Officer of the student council.
B. The name "student council" designates the president, vice president, financial officer, and secretary.
C. The student council was designated the leadership group responsible for organizing events and solving issues.
D. By the end of the day, the junior class hoped to have a Student Council President designate to announce to the school.