Which words are examples of vowel minimal pairs ?

A) tree-beat
B) cat-cut
C)vase-jazz
D)doll-role

http://www.englishclub.com/pronunciation/minimal-pairs.htm

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In the given options, the vowel minimal pairs are:

B) cat-cut

This pair differs only in the vowel sound, where "cat" has the short /æ/ vowel sound, while "cut" has the short /ʌ/ vowel sound.

D) doll-role

This pair also differs only in the vowel sound, where "doll" has the short /ɑ/ vowel sound, while "role" has the long or diphthong /oʊ/ vowel sound.

Therefore, the correct answer is B) cat-cut and D) doll-role.

Minimal pairs are pairs of words that differ only by one sound, creating a contrast in meaning. Vowel minimal pairs specifically involve two words that differ in their vowel sounds.

A) "Tree" and "beat" are not vowel minimal pairs because they differ in both the vowel sound ("ee" vs. "ea") as well as the consonant sound ("t" vs. "b").

B) "Cat" and "cut" are vowel minimal pairs because they only differ in the vowel sound ("a" vs. "u"), while the consonant sound remains the same ("c" and "t").

C) "Vase" and "jazz" are not vowel minimal pairs because they differ in both the vowel sound ("a" vs. "a") as well as the consonant sound ("v" vs. "j").

D) "Doll" and "role" are not vowel minimal pairs because they differ in both the vowel sound ("o" vs. "o") as well as the consonant sounds ("d" vs. "r" and "l").

Therefore, the answer is B) "cat-cut" as the only example of a vowel minimal pair in the given options.