Possible Clues:

• If everything goes smoothly
• Second-class in an exam, and that's the most hopeful view
• Second-class in an exam - that's the most hopeful view
• In the most optimistic scenario
• In the optimum situation
• In the most favourable circumstances
• In the optimal situation
• In the most favourable interpretation
• Taking the most optimistic view
• Be heard in a trial if all goes your way