Here is a single or multi-choice question: What is the smallest thing seen under the most powerful microscope , and how big is it ?

Would the answer to this question be an entity, an abbreviation, a description, a human, a location, or a numeric value?

Options:
(i) description.
(ii) entity.
(iii) abbreviation.
(iv) human.
(v) numeric.
(vi) location.
(ii)