6. Which statement is true for people from cultures that do not have words for numbers beyond 2 or 3?

a. They can detect changes in the number of objects the same way as those who have words for a complete number set.

b. They can't discriminate between different quantities.

c. They are able to discriminate between rough proportions, but not between precise numbers.

d. They can do basic counting, but not basic addition or subtraction.

e. They have no concept of what amount is visually greater or smaller than another.