Meaning: 'Elaborate' means involving many careful details or complicated elements.

Wrong options:

• accompanied: 'Accompanied' is a verb that does not fit here as it does not describe the nature of combinations.
• peace: 'Peace' is a noun that does not relate to the description of combinations.
• service: 'Service' is a noun that does not describe the combinations of fireworks.
• brilliance: 'Brilliance' is a noun that refers to brightness, which does not fit the context of describing combinations.
• effect: 'Effect' is a noun that refers to a result, which does not describe the nature of combinations.
• sacred: 'Sacred' is an adjective that implies something holy, which does not fit the context of combinations of fireworks.
• compensated: 'Compensated' is a verb that does not relate to the description of combinations.

Correct answer: accompanied

Explanation: The word 'accompanied' is a verb that indicates that fireworks were used alongside the spread of military explosives, maintaining grammatical coherence and contextual relevance.

Meaning: 'Accompanied' means to go along with or to be present at the same time as something else.

Wrong options:

• elaborate: 'Elaborate' is an adjective and does not fit as a verb in this context.
• peace: 'Peace' is a noun and does not fit as a verb in this context.
• service: 'Service' is a noun and does not fit as a verb in this context.
• brilliance: 'Brilliance' is a noun and does not fit as a verb in this context.
• effect: 'Effect' is a noun and does not fit as a verb in this context.
• sacred: 'Sacred' is an adjective and does not fit as a verb in this context.
• compensated: 'Compensated' is a verb that implies making up for something, which does not fit the context of fireworks.

Correct answer: service

Explanation: The word 'service' is a noun that refers to the duty or work performed, fitting grammatically as it describes the role of the military fireworks expert in conducting celebrations.

Meaning: 'Service' refers to the act of helping or doing work for someone or something.

Wrong options:

• elaborate: 'Elaborate' is an adjective and does not fit as a noun in this context.
• peace: 'Peace' is a noun that does not describe the role of the fireworks expert.
• accompanied: 'Accompanied' is a verb and does not fit as a noun in this context.
• brilliance: 'Brilliance' is a noun that refers to brightness, which does not fit the context of the fireworks expert's role.
• effect: 'Effect' is a noun that refers to a result, which does not describe the role of the fireworks expert.
• sacred: 'Sacred' is an adjective that implies something holy, which does not fit the context of service.
• compensated: 'Compensated' is a verb that does not fit as a noun in this context.

Correct answer: peace

Explanation: The word 'peace' is a noun that fits contextually as it describes the state of tranquility celebrated alongside victory, maintaining grammatical coherence.

Meaning: 'Peace' refers to a state of tranquility or absence of conflict.

Wrong options:

• elaborate: 'Elaborate' is an adjective and does not fit as a noun in this context.
• service: 'Service' is a noun that does not describe a state of tranquility.
• accompanied: 'Accompanied' is a verb and does not fit as a noun in this context.
• brilliance: 'Brilliance' is a noun that refers to brightness, which does not fit the context of celebrating peace.
• effect: 'Effect' is a noun that refers to a result, which does not describe a state of tranquility.
• sacred: 'Sacred' is an adjective that implies something holy, which does not fit the context of peace.
• compensated: 'Compensated' is a verb that does not fit as a noun in this context.

Correct answer: brilliance

Explanation: The word 'brilliance' is a noun that describes the quality of brightness and vividness in fireworks displays, fitting grammatically and contextually as it relates to the visual impact of the displays.

Meaning: 'Brilliance' refers to the quality of being bright or radiant.

Wrong options:

• elaborate: 'Elaborate' is an adjective and does not fit as a noun in this context.
• peace: 'Peace' is a noun that does not describe the quality of fireworks displays.
• service: 'Service' is a noun that does not relate to the visual quality of fireworks.
• accompanied: 'Accompanied' is a verb and does not fit as a noun in this context.
• effect: 'Effect' is a noun that refers to a result, which does not describe the quality of brightness.
• sacred: 'Sacred' is an adjective that implies something holy, which does not fit the context of brilliance.
• compensated: 'Compensated' is a verb that does not fit as a noun in this context.