Conditional correction (third conditional): Replace the incorrect "would have" in the if-clause. Original sentence: "If I would have realised the nature of the job earlier, I would not have accepted it." Choose the most appropriate correction for the if-clause opener.

Given data

• Counterfactual past condition with a counterfactual past result.

Concept/Approach
In a third conditional, the if-clause takes past perfect (not "would have"). Structure: If + had + past participle, … would have + past participle.

Step-by-step
Replace "If I would have realised" with "If I had realised".Corrected: "If I had realised the nature of the job earlier, I would not have accepted it."

Option analysis
A is correct. B is also correct but uses inversion and would require continuing the clause ("Had I realised …"); C/D are wrong forms; E leaves the classic error.

Common pitfalls
Using "would have" inside the if-clause.

Final Answer
If I had realised