Final answer:
The correct example of fraud among the provided options is embezzlement, while examples of correct verb usage include 'There is fewer criminals' and 'Mathematics is the fundamental language of physics.'
Step-by-step explanation:
The example of fraud in the given choices would be embezzlement. Embezzlement is a form of corporate crime, and hence it exemplifies the kind of fraud committed within the context of business or a corporation where individuals in positions of trust misappropriate funds.
When it comes to choosing the correct form of the verb, for example, the correct sentence is 'There is fewer criminals on the street since the law was passed.' Here 'is' should be used because 'fewer criminals' is considered a singular quantity or collective noun.
Another example would be 'Mathematics is the fundamental language of physics.' The subject 'mathematics' might look plural, but it is treated as a singular noun because it refers to a single discipline.