Which example illustrates the 'silent e' or 'magic e' concept?

The example that illustrates the 'silent e' or 'magic e' concept is when a vowel in a word is followed by a consonant and then an 'e' at the end of the word. This silent 'e' typically changes the pronunciation of the preceding vowel, making it a long vowel sound.

In the case of "Mike," the 'e' at the end is not pronounced but serves to make the 'i' a long vowel sound, resulting in the pronunciation /maɪk/. This demonstrates the 'magic e' rule effectively, as it is the presence of the silent 'e' that alters the way the vowel is pronounced.

Other options, such as "Rolo," "Mounds," and "Twix," do not follow this pattern. In those examples, the vowels do not change to a long sound due to a silent 'e' at the end, illustrating that they do not exemplify the 'silent e' or 'magic e' concept.