The theory of object recognition that is most directly supported by this evidence is the Recognition-by-components (RBC) theory.
<u>Explanation:
</u>
The basic component of letters like O, Q, or C is the circular design of these letters, whereas, the basic component of letters like A, W, or Z is their angular design.
Thus, it is difficult to find a letter from the letters that have the same basic design component because the brain takes time to process the negligible distinction in the shape of the letters.