Meaning: 'Advantage' refers to a favorable or superior position that one has over another.

Wrong options:

• limited: The word 'limited' is an adjective that describes something restricted in quantity or extent, which does not fit the context of gaining a competitive edge.
• greatly: 'Greatly' is an adverb that modifies verbs or adjectives, but it does not serve as a noun in this context.
• score: 'Score' is a noun that refers to the points achieved in a game, which does not relate to the concept of competitive advantage.
• highly: 'Highly' is an adverb that modifies adjectives or verbs, but it does not fit as a noun in this context.
• never: 'Never' is an adverb indicating the absence of time or occurrence, which does not fit the context of competition.
• sport: 'Sport' is a noun that refers to physical activities, but it does not convey the idea of a competitive edge.
• technical: 'Technical' is an adjective that describes something related to a specific skill or technique, which does not fit as a noun.

Correct answer: highly

Explanation: The adverb 'highly' modifies the adjective 'competitive,' indicating the degree of competitiveness in sports. It fits grammatically and contextually, emphasizing the intensity of competition.

Meaning: 'Highly' means to a great degree or extent, indicating a strong level of competitiveness.

Wrong options:

• limited: 'Limited' is an adjective that does not appropriately modify 'competitive' in this context, as it suggests restriction rather than intensity.
• advantage: 'Advantage' is a noun and cannot function as an adverb to modify 'competitive.'
• score: 'Score' is a noun that does not fit grammatically as it cannot modify 'competitive.'
• greatly: 'Greatly' is an adverb but does not fit as well as 'highly' in this context, which is more commonly used to describe competitiveness.
• never: 'Never' is an adverb indicating absence, which does not fit the context of describing competitiveness.
• sport: 'Sport' is a noun and cannot modify 'competitive' as it does not convey the degree of competition.
• technical: 'Technical' is an adjective that does not fit as it does not describe the level of competitiveness.

Correct answer: technical

Explanation: The word 'technical' serves as an adjective that describes the type of expertise related to the methods and processes used in drug testing. It fits grammatically and contextually, emphasizing the specialized knowledge required.

Meaning: 'Technical' refers to skills or knowledge related to a specific field, particularly in science or technology.

Wrong options:

• limited: 'Limited' is an adjective that does not appropriately describe the type of expertise needed in drug testing.
• advantage: 'Advantage' is a noun and cannot function as an adjective to describe expertise.
• greatly: 'Greatly' is an adverb that does not fit as it cannot describe expertise directly.
• score: 'Score' is a noun that does not relate to the type of expertise in this context.
• highly: 'Highly' is an adverb and cannot describe expertise; it does not fit grammatically here.
• sport: 'Sport' is a noun and does not describe the nature of expertise in drug testing.
• never: 'Never' is an adverb indicating absence, which does not fit the context of describing expertise.

Correct answer: greatly

Explanation: The adverb 'greatly' modifies the verb 'enhanced,' indicating the extent to which the expertise has improved. It fits grammatically and contextually, emphasizing significant improvement.

Meaning: 'Greatly' means to a large extent or degree, indicating substantial enhancement.

Wrong options:

• limited: 'Limited' is an adjective that does not fit as it cannot modify the verb 'enhanced.'
• advantage: 'Advantage' is a noun and cannot function as an adverb to describe the enhancement of expertise.
• score: 'Score' is a noun that does not fit grammatically as it cannot modify 'enhanced.'
• technical: 'Technical' is an adjective that does not fit as it cannot describe the extent of enhancement.
• highly: 'Highly' is an adverb but does not convey the same degree of improvement as 'greatly' in this context.
• sport: 'Sport' is a noun and cannot modify 'enhanced' as it does not relate to the improvement of expertise.
• never: 'Never' is an adverb indicating absence, which does not fit the context of describing enhancement.

Correct answer: sport

Explanation: The word 'sport' serves as a noun that refers to physical activities and competitions. It fits grammatically and contextually, aligning with the overall theme of competitive activities.

Meaning: 'Sport' refers to physical games or activities that involve competition.

Wrong options:

• limited: 'Limited' is an adjective that does not fit as it cannot serve as a noun to describe competitive activities.
• advantage: 'Advantage' is a noun but does not refer to the category of activities being discussed.
• greatly: 'Greatly' is an adverb and cannot function as a noun in this context.
• technical: 'Technical' is an adjective that does not fit as it cannot describe the type of activities in this context.
• highly: 'Highly' is an adverb and cannot serve as a noun to describe competitive activities.
• never: 'Never' is an adverb indicating absence, which does not fit the context of describing competitive activities.