Meaning: 'Differences' refers to the distinctions or variations between two or more items, in this case, the various project management techniques and their applications.

Wrong options:

• approaches: 'Approaches' refers to methods or ways of doing something, but it does not convey the idea of variation as effectively as 'differences.'
• problems: 'Problems' implies issues or difficulties, which does not fit the context of discussing variations in application.
• ways: 'Ways' suggests methods or manners of doing something, but it lacks the specific connotation of variation that 'differences' provides.

Correct answer: scaled

Explanation: The term 'scaled' is appropriate as it indicates adjusting the project management methodology to fit the specific needs of each project, aligning with the context of adapting to the benefit-to-cost ratio. It is a verb that fits grammatically in the sentence structure.

Meaning: 'Scaled' means to adjust or modify something in size or extent, particularly to make it suitable for a specific situation or requirement.

Wrong options:

• gauged: 'Gauged' means to measure or assess, which does not convey the idea of adjustment needed in this context.
• confiscated: 'Confiscated' means to take something away, which is irrelevant to the context of adapting project management methodologies.
• adjourned: 'Adjourned' refers to suspending a meeting or session, which does not fit the context of modifying project management approaches.

Correct answer: range

Explanation: The word 'range' fits well as it denotes a variety or assortment of project management tutorials and resources, aligning with the context of discussing the breadth of available options. It is a noun that matches the plural structure of 'a wide __.'

Meaning: 'Range' refers to a variety or selection of different things, indicating that there are many types of tutorials and resources available.

Wrong options:

• type: 'Type' suggests a category or classification, which does not convey the breadth of options as effectively as 'range.'
• context: 'Context' refers to the circumstances surrounding an event or idea, which does not fit the idea of variety in resources.
• scope: 'Scope' implies the extent or breadth of a subject, but it does not specifically indicate the variety of tutorials as 'range' does.

Correct answer: demonstrate

Explanation: The word 'demonstrate' is suitable as it indicates showing or proving proficiency through practical application, which aligns with the context of passing an exam and managing a project. It is a verb that fits grammatically in the sentence structure.

Meaning: 'Demonstrate' means to show or prove something through action or evidence, particularly in the context of showcasing skills or knowledge.

Wrong options:

• disagree: 'Disagree' means to have a different opinion, which does not fit the context of proving proficiency in project management.
• fall: 'Fall' does not convey any relevant meaning in this context and is unrelated to demonstrating skills.
• fight: 'Fight' implies a struggle or conflict, which is not relevant to the context of proving proficiency in project management.