Identify the type of Adverb .He always tries to do his best.

Let us explore the given options:
- Adverb of manner tells us how something happens.
-The child slept soundly.
- I was agreeably disappointed.

Adverb of degree tells us about the intensity of something.
-These mangoes are almost ripe.
- He is good enough for my pupose
Adverb of Affirmation is a word that declares that something is true or some equivalent expression or negative statement, judgment, or a logical proposition.
- Surely you are mistaken .
- He certainly went.

Adverb of frequency describes how often an action happens.
- I have told you twice.
- He frequently comes unprepared.

[Source:High School Grammar & Composition, Wren & Martin]