Read the following passage and mark the letter A, B, C or D on you answer sheet to indicate the correct answer to each of the questions

There are generally considered to be eight subspecies of tiger (Panthera tigris), three of which are now extinct. The remaining subspecies include the Bengal, Indo-Chinese, South China, Amur, and Sumatran tigers. Pressures from illegal killing, a shrinking food supply, and habitat loss led to the extinction of the Bali, Javan, and Caspian subspecies, and continue to threaten the survival of the remaining subspecies.

Tigers live in a variety of habitats from the temperate forests of the Russian Far East, to the mangrove swamps of the Sunderbans of Bangladesh and western India, to the tropical forests, grasslands, and marshes of India and Indonesia. Historically, they were also found near the Caspian Sea in Turkey and Iran, and on the islands of Bali and Java in Indonesia.

By some estimates, a century ago 50,000 to 80,000 tigers roamed India alone. Today, the tiger is classified as Endangered in the Red List of Threatened Species published by the International Union for Conservation of Nature (IUCN) and it is estimated that there are only 3,500 tigers remaining in the wild worldwide.

Until it was banned, trophy hunting and a market for tiger rugs and coats threatened the tiger’s survival. Today, habitat destruction, human population growth, and a demand for tiger parts threaten the tiger’s survival. In some cultures, tiger parts are thought to cure diseases such as rheumatism, convulsions, typhoid fever, and dysentery. Tiger bone used in these traditional medicines sells for as much as $75 to $115 per pound. In the Russian Far East, logging threatens the Amur tiger’s already shrinking habitat. Poaching has also increased since the international borders between Russia and its neighbors opened.

Câu 31 : What could be the best title for the passage?

A. Tigers under Threat

B. The Number of Subspecies of Tiger

C. Tigers Living in India

D. Market for Tiger Rugs and Coats