In which sentence is the underlined phrase an adjective phrase? A) she has been painting ( on cardboard ) for at least a decade.
B) The best examples ( of her artistry ) were featured in the gallery show. C) she has been painting on cardboard ( for at least a decade.). D) The best examples of her artistry were featured ( in the gallery show ).
The adjective phrase refers to the words which describe a pronoun or noun in a sentence. The adjective which describes it can appear before or after the pronoun or noun.
Therefore, sentence in which the underlined phrase is an adjective phrase is B) The best examples ( of her artistry ) were featured in the gallery show.