I believe the answer is b. Tomas can decorate 16 gifts with 2 rolls of ribbon because you divide 34 into 2 and you get 17. and since you want to use all of the ribbon the best choice is 16 gifts. Btw plz don't report me if i get this wrong.
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Because Velázquez had connections through his father in-law. He earned the chance to paint a portrait of the powerful Count-Duke of Olivares. The countduke told King Philip IV about Velázquez . When the king saw the completed portrait he decided that no one else would paint him and appointed Velázquez one of his court painters.