12. Chronic low-level leaking and the routine discharge of drilling mud and mineral salts present considerable environmental risk during offshore oil drilling.
(A) Chronic low-level leaking and the routine discharge of drilling mud and mineral salts present considerable environmental risk during offshore oil drilling.
(B) The reason offshore oil drilling presents a considerably environmental risk is because of chronic low-level leaking and the routine discharge of drilling mud and mineral salts.
(C) A considerable risk to the environment is presented during offshore oil drilling, where low-level leaks are chronic and the routine discharge of mud and mineral salts.
(D) Offshore oil drilling presents a considerable risk to the environment due to the fact of chronic low-level leaks, and mud and mineral salts are routinely discharged.
(E) Chronic low-level leaking, along with the routine discharge of drilling mud and mineral salts, are what make offshore oil drilling environmentally risky.
13. Aho, a Kiowa matriarch, held festivals in her home, they featured the preparation of great quantities of ceremonial food, the wearing of many layers of colorful clothing adorned with silver, and the recounting of traditional tribal jokes and stories.
(A) Aho, a Kiowa matriarch, held festivals in her home, they featured
(B) Festivals were held in Aho, a Kiowa matriarch's home, which featured
(C) Aho, who was a Kiowa matriarch in her home, held festivals featuring
(D) In her home, Aho, a Kiowa matriarch, held festivals that featured
(E) Aho, a Kiowa matriarch, held festivals in her home that featured
14. Innovative companies are not only skillful in developing new products but also in finding new ways to promote old ones.
(A) are not only skillful in developing new products but also in finding
(B) are skillful not only in developing new products but also in finding
(C) not only are skillful in developing new products, they also find
(D) not only develop new products, but they are also skillful in finding
(E) are both skillful in the development of new products and in finding
15. Madagascar was one of the last habitable areas of the earth to undergo human settlement, which has made it an ideal site for researching rare flora and fauna.
(A) Madagascar was one of the last habitable areas of the earth to undergo human settlement, which has made it
(B) Madagascar was one of the last habitable areas of the earth to have undergone human settlement, and that has made it
(C) Madagascar underwent human settlement as one of the last habitable areas of the earth, which makes it
(D) Madagascar, one of the last habitable areas of the earth, underwent human settlement, making it
(E) Because Madagascar was one of the last habitable areas of the earth to undergo human settlement, it is
16. International sporting events need not be fiscal disasters, the financial success of the 1992 Olympic Games demonstrates that fact.
(A) the financial success of the 1992 Olympic Games demonstrates that fact
(B) for example, the 1992 Olympic Games were financially successful
(C) like the financial success of the 1992 Olympic Games demonstrates
(D) a fact demonstrated by the 1992 Olympic Games, which were financially successful
(E) as the financial success of the 1992 Olympic Games demonstrates