Select the most appropriate option to fill in the blanks.She would not get the award _____ she deserved it.

The correct answer is Option 4), i.e., unless. Here, we can easily negate 'because' and 'therefore' because we need an Option that puts up a condition. Now let's see the REMAINING options unless means the same as if...not.Like if, unless is followed by a present tense, a PAST tense, or a past PERFECT tense (never by a conditional).Unless is used instead of if...not in conditional sentences of all types.The order of the clauses doesn't matter with sentences using unless.To make the sentence grammatically SOUND, we need 'Unless' to eliminate 'if..not'.We can write our sentence like this- She would not get the award unless she DESERVED it.