Use the cost-benefit analysis table to answer the question: should mrs. baxter allow her students to take an open-book test?

I can't see the cost-benefit analysis table.  But depending on what results it gives the cost-benefits could be that if she allows them to use open-books they could have a great chance of high test scores and good results.  In that same instance, it could hinder their education because they are not forced to memorize and recall the information.  

Your not allowed to ask their age, only if they're above 18, you cannot ask if they have ever been arrested, convicted, or spent time in jail prior to employment (you can however ask a question like "perhaps this job required security clearance, would you be able to attain it? "). you also cannot ask the severity or nature of any disabilities they have but similar to criminal record can ask if they are able to preform the job safely. in addition to this, you can ask *after* an interview if they're married for insurance reasons. so it appears to be c and d, but if you can only chose one it would probably be b.

Answer( inelastic);