Logical questions are concerned with the relation between the beliefs or "conclusions" a philosopher asserts and the reasons or evidence given to support such conclusions.
When a process of reason is expressed in language, we call it a rational "argument".
Logic thus can be considered the study of criteia for appraising or evaluating arguments. It asks if any proposed argument is a "strong" or a "weak" argument, and what are the criteria for determining this.
When we ask if the reasons or arguments given to support the conclusion really do support that conclusion, we are raising a question in logic.
Logic includes such questions as the following: