Question

Which article is used before S.D.O?

Answer 1

This is obviously an acronym, so in this case you would use the indefinite article “an” as in an SDO, if speaking in a general sense. If this particular acronym can be represented by a single unit; for example, PCO (public communications officer) You could employ the definite article “the” for a specific individual.

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Answer 2

Answer:

An

Explanation:

As the sound is (es) though it have 's' which is consonent we will write an.

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