Meaning: 'Efficient' means being able to achieve maximum productivity with minimum wasted effort or expense.

Wrong options:

• establish: Establish is a verb meaning to set up or create something, which does not fit as it does not describe a quality of companies.
• policy: Policy is a noun referring to a course of action adopted by an organization, which does not describe the companies' operational quality.
• demote: Demote is a verb meaning to lower in rank or position, which is contrary to the intended meaning of describing effective companies.
• practice: Practice is a noun that refers to the actual application of a concept, which does not describe the companies' operational quality.
• concern: Concern is a noun that refers to a matter of interest or importance, which does not describe the companies' operational quality.
• egregious: Egregious is an adjective meaning outstandingly bad or shocking, which does not fit the positive context of describing effective companies.

Correct answer: establish

Explanation: The verb 'establish' fits grammatically as it indicates the action that companies take to create or implement environmental policies. It aligns with the context of companies taking proactive steps regarding environmental practices.

Meaning: 'Establish' means to set up or create something in a firm or permanent way.

Wrong options:

• efficient: Efficient is an adjective that describes a quality of companies, not an action they take, making it unsuitable here.
• policy: Policy is a noun that refers to a course of action, which does not fit as it does not indicate an action taken by companies.
• demote: Demote is a verb meaning to lower in rank, which does not relate to the context of creating policies.
• practice: Practice is a noun that refers to the application of a concept, which does not indicate an action taken by companies.
• concern: Concern is a noun that refers to a matter of interest, which does not indicate an action taken by companies.
• egregious: Egregious is an adjective meaning outstandingly bad, which does not fit the context of establishing policies.

Correct answer: practice

Explanation: The noun 'practice' fits grammatically as it refers to the established methods or procedures that companies follow regarding environmental policies. It aligns with the context of discussing environmental standards.

Meaning: 'Practice' refers to the actual application or execution of a concept or policy.

Wrong options:

• establish: Establish is a verb that indicates an action, which does not fit as it does not refer to a method or procedure.
• policy: Policy is a noun that refers to a course of action, which does not fit as it does not describe the methods used by companies.
• demote: Demote is a verb meaning to lower in rank, which does not relate to the context of environmental methods.
• concern: Concern is a noun that refers to a matter of interest, which does not describe the methods or procedures followed.
• efficient: Efficient is an adjective that describes a quality, not a method or procedure, making it unsuitable here.
• egregious: Egregious is an adjective meaning outstandingly bad, which does not fit the context of discussing environmental standards.

Correct answer: concern

Explanation: The noun 'concern' fits grammatically as it indicates the interest or care that profitable companies can afford to give to environmental issues. It aligns with the context of discussing the relationship between profitability and environmental responsibility.

Meaning: 'Concern' refers to a matter of interest or importance, particularly regarding the environment in this context.

Wrong options:

• establish: Establish is a verb that indicates an action, which does not fit as it does not refer to an interest or care.
• policy: Policy is a noun that refers to a course of action, which does not fit as it does not describe an interest or care.
• demote: Demote is a verb meaning to lower in rank, which does not relate to the context of environmental interest.
• practice: Practice is a noun that refers to the application of a concept, which does not describe an interest or care.
• efficient: Efficient is an adjective that describes a quality, not an interest or care, making it unsuitable here.
• egregious: Egregious is an adjective meaning outstandingly bad, which does not fit the context of discussing environmental interest.