Final answer:
The counselor should recommend Arthur for further testing for the gifted program.
Step-by-step explanation:
The counselor's best next step would be A. Recommending Arthur for further testing for the gifted program.
Based on Arthur's scores on the Iowa Test of Basic Skills from his previous school year, it is evident that he excels in reading, language, and overall academic performance. However, his scores in math, science, and social studies indicate that he may not be challenged enough in his current classes and may benefit from more advanced coursework.
By recommending Arthur for further testing for the gifted program, the counselor can ensure that he is placed in classes that provide him with the appropriate level of academic stimulation and prevent him from feeling bored or disengaged.