This is the 794th most frequent Hebrew word.
ברורה
Clear or obvious.
In this sentence, 'ברורה' is used as an adjective describing 'המסקנה' (the conclusion), denoting something easily understood.
המסקנה ברורה לכל מי שבחן את הראיות.
The conclusion is clear to anyone who examined the evidence.
Here, 'ברור' is the masculine form in 'הסבר ברור'; it describes 'הסבר' (explanation), again used as an adjective indicating clarity.
היא נתנה הסבר ברור כדי שכל התלמידים יבינו.
She gave a clear explanation so all the students would understand.
In this example, 'ברורה' modifies 'ההחלטה' (the decision), meaning an evidently apparent or well-determined course of action.