Final answer:
Without the specific number of ASL signs categorized as DNS from the 450-sign study, it is not possible to calculate the percentage that falls under DNS.
Step-by-step explanation:
To find what percent of the ASL name signs fell under the DNS category from a sample size of 450, we would need to have the actual number of signs that are considered to be DNS (Descriptive Name Signs). Since this information is not provided in the question text, we cannot calculate the percentage. Typically, one would use the percentage formula:
Percent = (Number in Category / Total Number) × 100%
If we knew how many out of the 450 signs were DNS, we could insert that number in place of 'Number in Category' and calculate the exact percentage. However, without this crucial piece of data, providing an answer is not possible.