reading 17,18,19 practice problems

I’m very confused about the following pratice questions. It would be very helpful if you can explain that. Thanks:)

reading 17: if wages were automatically adjusted for changes in the price level, the short-run aggregate supply curve would most likely be:

A flatter B steeper C unchanged

reading 18:based on typical labor utilization partterns across the business cycle, productivity is most likely to be highest:

A at the peak of a boom B into a maturing expansion C at the bottom of a recession

reading 19:which of the following best describes a fundamental assumption when monetary policy is used to influence economy?

A financial markets are efficient B money is not neutrual in the short run C official rates do not affect exchange rates

help mee… broken heart