$[1\mathrm{.}5]*$Inter$3$:$*1.$Clients at some level can access private items?

$2.$Clients at some level can access protected items?

$3.$ Out of b$,$ y$,($protected$)$ c and z$,($public$)$ which ones can be passed down?

$[1\mathrm{.}5]*$Inter$4$:$*1.$ For Me and Dad $.$h and $.$cpp files, what should be #included in which file?

In Me$.$h include

In Me$.$cpp include

In Dad.cpp include

$[2]$Q: Runtime Polymorphism $($e$.$g$.$ meow, ruff, meow$)$ can be achieved by using pointers to objects with $\_\_\_\_\_\_\_\_\_\_$ and $\_\_\_\_\_\_\_\_\_\_\_\_.$