What does the word "it" as used in the phrase "by selling it" refer to?

Tourism is one of the world's largest industries, and it is the fastest growing. It contributes over £50 billion to the economy annually, over £12 billion of it from overseas visitors. About 25 million overseas visitors come to Britain each year. Tourism is one of the biggest employment (26) ____________in the UK, too - it employs over 1.7 million people, which is more than in the construction or health service industries.

Around 20% of all new (27) ____________are in this industry. These figures are very impressive, but how do they translate into job possibilities for you? There is room in this industry for all sorts of people, with different educational (28) ____________, personal attributes, interests and career aims. A tourist is really a traveller - someone who (29) ____________a journey, usually for recreation, like a holiday or sightseeing. (30) ____________, tourism at its very simplest refers to the industry that provides travel and entertainment facilities for people away from their own homes.

B. So as to earn more money for development, she applied for the job abroad.

C. She applied for the job abroad, so she developed herself and earn more money.

D. To earn more money was the reason why she applied for the job abroad

If I hadn't had so much work to do I would have gone to the movies.

B. I would go to the movies when I had done so much work.

C. A lot of work couldn't prevent me from going to the movies.

D. I never go to the movies if I have work to do.

A. Annie Oakley was a talented and popular entertainer.

C. Queen Victoria was brave when she held a cigarette for Annie Oakley.

D. Buffalo Bill Cody was not as good a marksman as Annie Oakley.