Question

highlight the vague word or phrase in the thesis statement below.
sadness is the most caring of all of them.

Explanation:

"All of them" does not specify what group "them" refers to, making it unclear and vague. Additionally, framing "sadness" as "caring" is imprecise without definition, but the most explicitly vague element is the unspecified reference group.

Answer:

The vague phrase is "all of them"