Which of the following is a control measure for preventing a data breach?

Data transmission is the movement of data, not a control measure itself, although secure transmission methods (like encrypted channels) are controls.

Data attribution refers to assigning ownership or source to data, which is not a direct measure for preventing a breach.

Data retention policies define how long data is stored, which is a data lifecycle management aspect, not a direct breach prevention control.

Data encryption is a security control measure that scrambles data, rendering it unreadable to unauthorized individuals even if they gain access, thus protecting against data breaches.