In American Sign Language (ASL), the numbers 1 through 5 have specific signs that can be modified to express ordinals (first, second, third, etc.) and they can also be combined with special movements to denote them as ordinal numbers.
The correct option with special signs for ordinals would primarily be:
- FIRST-THIRD
- FIRST-FIFTH
- FIRST-NINTH
- FIRST-TENTH
However, it's important to note that typically, 1st through 3rd (FIRST-THIRD) have more standardized signs. The signs for 4th (FOURTH) and 5th (FIFTH) may not feature distinct representations compared to their cardinal forms, while 9th and 10th (NINTH and TENTH) can also be represented differently.
If you are asking for a specific set that has a clear distinction in their signs as ordinals, the set FIRST-THIRD is the most commonly recognized for having a "special" or standardized ordinal representation in ASL.
So we could conclude that FIRST-THIRD is the most distinctive among the options, but all of them do have their respective signs in ASL.