B. According to the text, learning a new language can help your career by.... 1) making you travel more often for work. 2) allowing you to work in any country. 3) making you more attractive to employers. 4) helping you start your own international business.

В первом абзаце текста говорится, что "being bilingual or multilingual can significantly boost your career opportunities" и что "companies often seek employees who can communicate with international clients and partners". Это напрямую указывает на то, что знание языка делает вас более ценным для работодателей.

Ответ: 3) making you more attractive to employers.