It's a determiner.
What is the purpose of the following sentence?I think it would be best to study the problem carefully.
The pronoun that replaces the noun 'speech' in a sentence is it.Examples:He seems to have lost the power of speech. He lost it when he opened the bill.The candidate's speech was brilliant. Itbrought cheers from the audience.
Best is adjective and policy is noun
It shows strong emotion and meant to encourage someone to study the problem before acting.
Honesty is a noun.
I think the best farewell speech will be one you think of yourself and actually mean it. It would just be more dramatic and appealing for everyone, and interesting to listen to. Otherwise, you can always find farewell poems on google and use them as parts of your speech.
Free speech is a human right.The best man gave a speech at the wedding.
"I think, therefore I am."
I think would and he need to be switched. (not the best grammar person)
A dictionary or an online thesaurus would be a good reference source to find the part of speech for the word "really." It is an adverb that is used to modify adjectives or other adverbs in a sentence.
My best friend and I love to hang out together.
No that would not be proper English. Best by itself in a sentence is correct.