Correct Response: B. Option B is correct because providing individualized instruction based on students' assessed areas of need in phonics knowledge and skills will likely improve students' decoding accuracy. In an oral fluency assessment, accuracy is measured by the percentage of word-reading errors the student makes during oral reading. Option A is incorrect because second- grade level phonics instruction focuses on orthographic patterns larger than single letters. Promoting oral reading accuracy by encouraging students to read words letter by letter would be appropriate for students who are in an earlier phase of reading development, when they are still focused on learning letter-sound correspondence and blending skills. Options C and D are incorrect because these benefits do not correspond to the instruction described, which is focused on increasing the students' reading accuracy and not on developing their automaticity (C) or reading rate (D).