Processing every possible combination of the letters DBRI to arrive at the word BIRD is an example of the use of

an algorithm

Explanation:

In simple words, An algorithm can be defined series of guidelines programmed for a particular purpose to be carried out. This may be a basic procedure, such as combining two figures, or a complicated process, including such processing a video file that is condensed. Algorithms are also developed as features in software engineering.

Thus, from the above we can conclude that the correct answer is an algorithm.

answer; basic psychology;