SAT Question 84b5125b: Words In Context answer and explanation

English - Words In Context - Fill In Blank Multi Word Phrase
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Artist Marilyn Dingle’s intricate, coiled baskets are ______ sweetgrass and palmetto palm. Following a Gullah technique that originated in West Africa, Dingle skillfully winds a thin palm frond around a bunch of sweetgrass with the help of a “sewing bone” to create the basket’s signature look that no factory can reproduce.
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Difficulty:Easy
Which choice completes the text with the most logical and precise word or phrase?