Use Of The A And An Questions Medium
The use of "a" or "an" before acronyms depends on the pronunciation of the acronym. If the acronym is pronounced with a vowel sound at the beginning, then "an" should be used. On the other hand, if the acronym is pronounced with a consonant sound at the beginning, then "a" should be used. For example, "an FBI agent" because "FBI" is pronounced as "eff-bee-eye," and "a NASA scientist" because "NASA" is pronounced as "nasa."