Control flow and logic — quiz

You're writing a helper that returns 'pass' if a user's score is 70 or higher, otherwise 'fail'. Which is the cleanest implementation?

• if (score < 70) { return 'fail' } else if (score == 70) { return 'pass' } else { return 'pass' }
• if (score >= 70) return 'pass'; else return 'fail';
• Use a switch statement with one case per integer score
• if (score) return 'pass';