Question

*After* lunch let's go out for a coffee.
Identify which part of speech is 'after'?

Answer 1

Answer:

After is a conjunction.

hope this helps

Answer 2

Answer:

After lunch let's go out for a coffee. here after is preposition.

Explanation:

• Preposition is a part of speech.
• A preposition is word or the group which is used before a noun, pronoun or noun phrase to show direction, time, place, location, spatial relationships or to introduce an object.
• There are commonly some types of preposition, simple preposition, double preposition, compound preposition,  participate preposition, disguised preposition, phrase preposition.
• Some examples of prepositions are in, at, on, after, to , before, under.

Hence after lunch let's go out for a coffee. here after is preposition.