What does a disjoint (d) constraint mean in supertype/subtype relationships?

Consider a simplified CHARTER table from the AviaCo database. What is the output of:

 Which of the options below happens when data redundancy is uncontrolled?

Which of the following individuals is most likely to receive the diagnosis of multiple sclerosis (MS)?

You are working with a patient who has dementia and is having a rougher morning in terms of frustration and mood-swings. Which of the following is the best strategy to employ when communicating with your patient?

Speech instructions

Which assessment finding requires holding tizanidine?

Which factors contribute to loss of seizure control? Select all that apply 

Match the medication with its primary clinical use.

Which outcome indicates migraine preventive therapy is effective?