Which vowel combinations can be used for creating sounds in a syllable?

The choice that includes vowel combinations capable of creating distinct sounds in a syllable is particularly focused on digraphs and vowel teams that produce specific phoneme sounds. In this case, the combinations listed—ea, ee, oi, and oo—represent vowel pairs commonly found in the English language.

For instance, "ea" can create the sound as in "bread," "ee" produces a long vowel sound as in "see," "oi" can be heard in "boil," and "oo" can yield the sound found in "moon." Each of these combinations works effectively within a syllable to contribute to its phonetic structure.

Other provided options include combinations that are either not traditionally recognized as vowel teams or consist solely of single vowel letters, which do not function as vowel combinations. Therefore, the selection of combinations in choice B highlights pairs that are integral to syllabic sound creation in English.