Student or Learner
"If all the questions can be answered with a "yes," the privilege may be accorded to your company."
Is "a" necessary?
What do others prefer? "Answer with a 'yes'" sounds most natural to me.
For a change of pace, you could say "If the questions can all be answered in the affirmative..."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.