Related Clues:

• Choice
• Substitute
• Option
• Effect a conversion on the mission field? It's possible
• Rope for 'orse - natural, but unavailable in Hobson's stable
• Change local-born substitute
• Choice domestic laid on table, so to speak
• One possible option is to change local
• (Of two things) mutually exclusive
• Reduction; alternative plan for emergencies
• One of two possibilities
• Available as another possibility
• Mutually exclusive
• One of a number of possibilities
• Retreat when summer has ended