A student is writing an essay about unique linguistic traditions. The passage below contains an underlined portion that may contain a punctuation error.
Historically spoken on the Canary Island of La Gomera, Silbo Gomero is a whistled language that mimics the phonetic structure of Spanish. The rugged topography of the island—a landscape defined by deep ravines and steep valleys—made whistling an efficient way to communicate across distances of up to five kilometers. Because the language translates Spanish vowels and consonants into high- and low-pitched whistles, speakers—known locally as *silbadores*, can convey complex messages across the mountainous terrain. Historically used by shepherds, this unique form of communication is now taught in local schools to ensure its survival.
Which of the following options represents the correct punctuation for the underlined portion?
- ANO CHANGE
- speakers—known locally as *silbadores*—canCevap
- Cspeakers; known locally as *silbadores*, can
- Dspeakers. Known locally as *silbadores*, they can