Question

agree
agreement
agreeable
disagree
agreeably
disagreement
disagreeable

Explanation:

The words shown are related to the root word "agree" and its derivatives, which involves the study of word structure, formation, and meaning, falling under Linguistics (a subfield of Arts) as it deals with vocabulary, word families, and morphological analysis.

Answer:

The subfield is Linguistics (under Arts discipline) as the content focuses on word derivatives and vocabulary related to "agree", which is a linguistic study of word formation and meaning.