In that context, the phrase the best can also be used as if it were an adverb I'm drawing a blank on common words that mean this in a general sense, so i suspect people would use more specific words or phrases I like chocolate best, better than anything else
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Can be used when what one is choosing from is not specified
I like you the best
Which one is the best is obviously a question format, so it makes sense that which one the best is should be the correct form This is very good instinct, and you could even. This is the best car in the garage We use articles like the and a before nouns, like car
The word best is an adjective, and adjectives do not take articles by themselves It was the best ever means either it was the best up to that point in time, and a better one may have happened since then, or it includes up to the present 3 it's best (if) he (not) buy it tomorrow. is not a subjunctive form, and some options do not work well 3a it's best he buy it tomorrow

The verb tense is wrong with 3a
Everybody in that house knows how to fix cars ,but the oldest brother knows the best Everybody in that house knows how to fix cars, but the oldest brother knows the most I though in order to survive i had to start buying cheap things, spend less and sell the unnecessary things And i said to myself
I have to make the best of whatever i have. i don't. The best way to use the best way is to follow it with an infinitive However, this is not the only way to use the phrase The best way can also be followed by of with a gerund

This plan of creating an electoral college to select the president was expected to secure the choice by the best citizens of each state, in a tranquil and deliberate way, of the man.
This is very good instinct, and you could. The word best is an adjective, and adjectives do not take articles by themselves. Have someone's (best) interests at heart (=want to help them) He claims he has only my best interests at heart
Be in someone's/something's (best) interest(s) (=bring an. The rule for formal letters is that only the first word should be capitalized (i.e Emails are less formal, so some of the rules are relaxed
