Which word exemplifies an open syllable?

An open syllable is defined as a syllable that ends with a vowel sound, which is not closed off by a consonant. In the word "cable," the first syllable "ca" is open because it ends with the vowel 'a'. This allows the vowel to be pronounced as its long sound. The second syllable "ble" contains a consonant, which makes it a closed syllable.

In contrast, the other words provided have closed syllables. "Doctor" has the first syllable "doc" that ends in a consonant, "shake" has a single syllable that does end with a consonant but does not contain a vowel sound that identifies it as open, and "bread" also has a single closed syllable ending with a consonant. Therefore, "cable" is the only option that exhibits the characteristic of an open syllable.