Meaning: 'Addition' refers to the act of adding something, in this case, the increasing necessity of language skills.

Wrong options:

• in: The preposition 'in' does not fit here as it does not introduce an additional point or factor.
• point: The noun 'point' does not serve to introduce an additional idea; it refers to a specific argument or reason.
• pressure: The noun 'pressure' does not relate to the context of adding information; it implies stress rather than an additional factor.
• tradition: The noun 'tradition' does not fit as it refers to customs or practices, which does not align with the context of adding information about job requirements.
• communicating: The gerund 'communicating' does not fit grammatically as it does not serve as a noun to introduce an additional point.

Correct answer: communicating

Explanation: The word 'communicating' is a gerund that serves as the object of the preposition 'of,' fitting grammatically and contextually as it describes the action required of people in a multilingual work environment.

Meaning: 'Communicating' refers to the act of conveying information or expressing thoughts and feelings in spoken or written form.

Wrong options:

• in: The preposition 'in' does not fit as it does not describe an action or process; it indicates location or inclusion.
• point: The noun 'point' does not fit as it does not describe an action; it refers to a specific argument or reason.
• pressure: The noun 'pressure' does not relate to the context of communication; it implies stress rather than an action.
• tradition: The noun 'tradition' does not fit as it refers to customs or practices, which does not align with the context of communication.

Correct answer: point

Explanation: The word 'point' is a noun that fits grammatically as it refers to a specific argument or reason. In this context, it questions the rationale behind learning a third language when two widely spoken languages are already known.

Meaning: 'Point' refers to a specific argument or reason in a discussion.

Wrong options:

• in: The preposition 'in' does not fit as it does not refer to an argument or reason; it indicates location or inclusion.
• pressure: The noun 'pressure' does not relate to the context of discussing the rationale for learning languages; it implies stress rather than a reason.
• addition: The noun 'addition' does not fit as it refers to something extra rather than an argument or reason.
• tradition: The noun 'tradition' does not fit as it refers to customs or practices, which does not align with the context of discussing the rationale.

Correct answer: on

Explanation: The preposition 'on' fits grammatically as it indicates the subject of interest or concern. In this context, it describes the attitude of some people towards learning a new language.

Meaning: 'On' indicates a focus or concern regarding a particular subject.

Wrong options:

• in: The preposition 'in' does not fit as it does not indicate a focus on an action or subject; it suggests location or inclusion.
• point: The noun 'point' does not fit as it does not indicate a focus or concern; it refers to a specific argument or reason.
• pressure: The noun 'pressure' does not relate to the context of discussing attitudes; it implies stress rather than a focus.
• addition: The noun 'addition' does not fit as it refers to something extra rather than indicating a focus on an action.