All of the following are ways to distinguish allophones except for:.
a. they always change the meaning of a word.
b. they never change the meaning of a word.
c. native speakers are unaware of the differences between the two sounds.
d. they are usually in complementary distribution.

The correct answer is letter A

Explanation: Allophones or allophonic variants are speech sounds that constitute a variant or phonetic realization of the same phoneme, being, in most cases, predictable from a given context and can be described in terms of phonological rules.

The different phonetic realizations of the phoneme is resultant from the assimilation process. This process consists of the identification of all or part of a segment with another neighbor.

the above statement/question is (true);

b hope this