Read the following passage and choose the correct answer to each of the questions.

Cycling to a Better Future

In 2008, when he was 12 years old, Thomas Hircock visited India with his father. It wasn't Thomas' first trip abroad. He had been outside of the USA many times before, travelling with his father who is an international businessman, but he had never been to a place like India. It wasn't the sights and sounds of this huge exotic country that caught his attention, but the terrible poverty he saw on almost every corner.

One day during their trip, they passed through some poor villages in Jharkhand in the northeast. There, Thomas learned that only around 20% of local teens went to school. But when he asked villagers what they needed to help educate children, they didn't ask for paper, pens or books. What they really needed were bicycles. As Thomas learned, many children have to walk up to 20 miles to get to school. And because the area has many dangerous animals like snakes and leopards, these journeys are very hazardous. So, instead, many children work on farms or in local coal mines.

When he returned to the USA, Thomas decided to do something to solve the problem. With the help of his family and school friends, he set up a charity called Access to Education to raise money to buy bicycles for children in India. He started fundraising in his high school and by the end of 2008 he had raised $600. This was enough to buy eight bicycles. And now, the campaign is stronger than ever. In fact, the charity has sent around 500 bicycles to schools in India. These bicycles are manufactured in India and are strong enough to ride in forest terrain. Also, each comes with a repair kit so that it can be used for many years.

Once a year Thomas and his father travel to India to distribute the bicycles and teach children how to ride them. And each time, villagers gather to show their thanks to this inspirational teenager. As Thomas says, "Giving a bicycle to these kids is to make them stronger, is to give them power. It's an amazing thing to do.”

Braille alphabet has been one of the greatest ____ in human history.