office discipline
It is more common to use the expression in regard to or regarding.
The phrase is 'in regards to.'
The correct answer is "in regard to". Even better, "this is regarding ..." Don't forget that "regards" usually means an expression of sentiment something like "best wishes", as in, "Please pass along...
Verb: Consider or think of (someone or something) in a specified way.Noun: Attention to or concern for something.