Question

he is ___ youngest office there
​

Answer 1

Answer:

he is the youngest office there

Answer 2

Answer:

He is the youngest officer there.

With words starting with a vowel sound, we use a.

With words starting with a consonant sound, we use an.

And if we want to throw light on any particular thing, then we use the.

Hope this helps. Best wishes from my side for your studies✌