Final answer:
The stemplot displays a bimodal and symmetric distribution of test scores.
Step-by-step explanation:
The stemplot displays the distribution of 26 students' scores on a 90-point statistics test. Based on the given information, it is mentioned that most scores fell in the 60s, 70s, 80s, and 90s. Additionally, it is stated that there are a substantial number of A and B grades (80s, 90s, and 100). From this information, we can conclude that the shape of the distribution of test scores is Bimodal and symmetric.