Meaning: Infrastructure refers to the basic physical and organizational structures needed for the operation of a society or enterprise.

Wrong options:

• prevalence: Prevalence is a noun that refers to the commonness of a condition, which does not fit as it does not describe a type of resource or facility.
• income: Income is a noun that refers to money received, which does not relate to the facilities or systems needed to address hearing loss.
• mortality: Mortality refers to the state of being subject to death, which is unrelated to the context of resources for hearing loss.
• economic: Economic is an adjective that describes something related to the economy, but it does not fit as a noun in this context.

Correct answer: strategic

Explanation: The word 'strategic' is an adjective that describes a plan designed to achieve a long-term or overall aim. It fits grammatically and contextually as it modifies 'plan' to indicate that the plan should be well thought out and purposeful in addressing hearing loss.

Meaning: Strategic means relating to the identification of long-term or overall aims and interests and the means of achieving them.

Wrong options:

• prevalence: Prevalence is a noun that refers to the commonness of a condition, which does not fit as it does not describe a type of plan.
• income: Income is a noun that refers to money received, which does not relate to the nature of a plan.
• infrastructure: Infrastructure is a noun that refers to facilities and systems, which does not describe the type of plan needed.
• mortality: Mortality refers to the state of being subject to death, which is unrelated to the context of planning for hearing loss.
• economic: Economic is an adjective that describes something related to the economy, but it does not fit as a descriptor for a plan.

Correct answer: prevalence

Explanation: The term 'prevalence' refers to the commonness or widespread occurrence of hearing loss within a community. It fits grammatically as a noun that aligns with the context of discussing the impact of hearing loss.

Meaning: Prevalence refers to the proportion of a population found to have a condition at a specific time.

Wrong options:

• income: Income is a noun that refers to money received, which does not relate to the frequency of hearing loss.
• strategic: Strategic is an adjective that describes a type of plan, which does not fit as it does not refer to a measurable occurrence.
• infrastructure: Infrastructure is a noun that refers to facilities and systems, which does not relate to the occurrence of hearing loss.
• mortality: Mortality refers to the state of being subject to death, which is unrelated to the context of hearing loss.