Question

b. which of the following describes the set of nice poems?
a. it is well defined. for a given thing, it is possible to tell whether it is a poem.
b. it is not well defined. although there is a clear meaning of poems, it is not possible to tell whether a thing is a poem.
c. it is well defined. it is possible to list all of the nice poems in the world.
d. it is not well defined. there is no clear meaning of poems.
e. it is well defined. for a given poem, it is possible to tell whether it is nice.
f. it is not well defined. there is no clear meaning of nice.

Explanation:

To determine the set of "nice poems", we need a clear, objective criterion. "Nice" is subjective, so there's no universal way to tell if a poem is nice. Option F states it's not well - defined due to the unclear meaning of "nice", which matches the nature of defining "nice poems".

Answer:

F. It is not well defined. There is no clear meaning of "nice".