The correct terms related to typography (fonts) are:
A. Ascender: The part of a lowercase letter that extends above the x-height (e.g., the top of “h” or “b”).
C. Descender: The part of a letter that extends below the baseline (e.g., the bottom of “g” or “y”).
E. x-height: The height of the lowercase letter “x”, which represents the main body height of lowercase letters in a typeface.
While Kern (B) and Track (D) are also typography-related, they refer more to spacing adjustments between letters rather than parts or types of font characters themselves.
The question is specifically asking about terms used to describe types of fonts, which refers more to the structure and anatomy of characters than their spacing.