McDonald’s is one of the most famous brands in the world. I...

McDonald’s is one of the most famous brands in the world. It is the world’s largest chain of hamburger restaurants with 31,000 eateries. It operates in 119 countries, serving 47 million customers a day. The company employs over 1.5 million people. The business began in 1940 when brothers Richard and Maurice McDonald opened their first restaurant. In 1948, they introduced the "Speedee Service System" which started the modern fast-food phenomenon. The golden arches trademark was introduced in 1962. McDonald’s has rarely been out of the headlines for controversies over its unhealthy menus and working conditions. The term "McJob" was added to Merriam-Webster's Dictionary in 2003, meaning "a low-paying job that requires little skill and provides little opportunity for advancement". 
Source: http://www.businessenglishmaterials.com/mcdonalds.html
 Regarding the use of referents underlined on the text, choose the best alternative: