GMAT Sentence Correction (SC) | Re: Though the term

Though the term "graphic design" may suggest laying out corporate brochures and annual reports, they have come to signify widely ranging work, from package designs and company logotypes to signs, book jackets, computer graphics, and film titles.

My explanation for suggest:
A.Here the singular term "GD" is the subject and it signifies two actions (laying out corporate brochures , laying out annual reports) which were combined with conjunction "and" so suggest have
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