Can someone me with this question.

A(n) __ clause should always be separated from the rest of the sentence by commas

If one writes logically, he will prove his point. is this sentence correct or contains an unwarranted shift in person?

Which of the following sentences uses dashes correctly? a. i looked under the bed - get this - and there it was! b. i need - a lot of - colors for this painting. c. i can't believe my own - brother! - is now a mayor. d. tom and i - are planning - a wedding in june.