Evaluating reason and quick check which phrase does defines a sound argument and impractical analysis that is hard to prove a sensible and valid statement a popular opinion a loud remark
A sound argument is defined as a logical and well-supported reasoning that leads to a valid and sensible statement.
An impractical analysis, on the other hand, refers to an analysis that is difficult to prove or lacks practicality in its approach.
A popular opinion is a widely-held belief or viewpoint that is commonly accepted by a large number of people.
A loud remark is a statement or comment that is expressed loudly or forcefully.