instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Pelvic fins are well developed, and rather narrow, with _ to ten fin rays.
answer:
nine


question:
Ospreys reach sexual maturity between _ and five years of age.
answer:
three


question:
Nuclear energy comes in _ forms, fission and fusion.
answer:

two