Assuming the sentence meant something like ”I admit I have not accomplished ev erything I set out to achieve...”, the phrase ”Set out to” is the correct idiomatic expression for starting a task or pursuing a goal.- Rejecting Distractors:- The other options are grammat ically incorrect or do not fit the meaning of initiating an objective. Grammatical Precision ”Set out to” correctly implies the beginning of a goal or task, suitable for this sentence’s likely intended meaning.