The correct answer is: A. Neither compound type is neutral.
However, it's important to clarify that ionic compounds are made up of charged ions (like Na+ and Cl- in sodium chloride), while polar compounds (like water) have polar bonds but are overall neutral.
Let’s break down why the other options are incorrect:
B. Neither compound type dissolves in polar solvents - This is incorrect because ionic compounds often dissolve well in polar solvents (like water) due to their charged nature, which interacts favorably with the polar solvent molecules.
C. Both compound types are held together by covalent bonds - This is incorrect because ionic compounds are held together by ionic bonds (electrostatic attraction between oppositely charged ions), while polar compounds are typically held together by covalent bonds (sharing of electrons).
D. Both compound types have oppositely charged regions - This is misleading. Ionic compounds have full charges and are made up of ions, whereas polar compounds have partial charges resulting from differences in electronegativity between atoms.
None of the options accurately relate ionic and polar compounds in the context given, but option A is the least misleading if we consider that both are neutral in overall charge (not neutral in terms of electronegativity and ionic nature).