The answer is B.
Therefore, the correctly written sentence using the right form of the adjective "strong" is :
I think Jhon is the strongest.
Pretty sure it’s number 2
Public speaking becomes a necessary outlet to advocate for issues within and ... We would commonly use words or phrases without investigating their impact on ... Unlike writing an essay or posting a picture online, public speaking requires that ... way that you will feel confident, fluent, and in control of the words you speak.