Meaning: 'Constituted' means to make up or form something, in this case, indicating that luck formed an important part of the picture.

Wrong options:

• particular: 'Particular' is an adjective that does not fit grammatically as it cannot serve as a verb in this context.
• consisted: 'Consisted' is also a verb but implies a composition of elements, which does not align with the intended meaning of luck being a part of the picture.
• summary: 'Summary' is a noun that does not fit grammatically as it cannot serve as a verb in this context.
• outage: 'Outage' is a noun referring to a period when something is not functioning, which is unrelated to the context of luck.

Correct answer: advantage

Explanation: The term 'advantage' is a noun that fits grammatically and contextually, as it describes the beneficial position of the princes of Moscow regarding male succession. It indicates a favorable condition that contributed to their stability.

Meaning: 'Advantage' refers to a condition or circumstance that puts one in a favorable or superior position.

Wrong options:

• particular: 'Particular' is an adjective that does not fit as it cannot describe a condition or circumstance in this context.
• conflict: 'Conflict' is a noun that implies a struggle or disagreement, which does not describe a beneficial position.
• constituted: 'Constituted' is a verb that does not fit as it does not describe a condition or circumstance.
• summary: 'Summary' is a noun that does not relate to the context of succession and does not fit grammatically.
• outage: 'Outage' is a noun referring to a disruption, which does not describe a beneficial position.

Correct answer: conflict

Explanation: The word 'conflict' fits grammatically as a noun that describes a struggle or disagreement. In this context, it indicates the absence of disputes or rivalries during the succession of princes, which is crucial to understanding the stability of their rule.

Meaning: 'Conflict' refers to a serious disagreement or argument, which in this case, highlights the lack of such issues in the succession process.

Wrong options:

• particular: 'Particular' is an adjective that does not fit as it cannot describe a situation of struggle or disagreement.
• advantage: 'Advantage' is a noun that describes a beneficial position, which does not fit the context of describing a lack of disputes.
• constituted: 'Constituted' is a verb that does not fit as it does not describe a situation of struggle or disagreement.
• summary: 'Summary' is a noun that does not relate to the context of succession and does not fit grammatically.
• outage: 'Outage' is a noun referring to a disruption, which does not describe a struggle or disagreement.

Correct answer: conflict

Explanation: The term 'conflict' is used here to indicate the absence of competition among the princes' sons. It fits grammatically and contextually, as it describes the lack of rivalries that could disrupt the succession process.

Meaning: 'Conflict' refers to a serious disagreement or competition, which in this context, emphasizes the fortunate situation of the princes' sons not facing such challenges.

Wrong options:

• particular: 'Particular' is an adjective that does not fit as it cannot describe a situation of struggle or disagreement.
• advantage: 'Advantage' is a noun that describes a beneficial position, which does not fit the context of describing a lack of competition.
• constituted: 'Constituted' is a verb that does not fit as it does not describe a situation of struggle or disagreement.
• summary: 'Summary' is a noun that does not relate to the context of succession and does not fit grammatically.
• outage: 'Outage' is a noun referring to a disruption, which does not describe a struggle or disagreement.