Directions:Each of the following sentences in this section has a blank space with four words or group of words given. Select whichever word or group of words you consider most appropriate for the blank space and indicate your response on the Answer Sheet accordingly.

The Nobel Prize for Chemistry this year is a tribute to the power of _____(11)____The laureates harnessed evolution and used it in the __(12)____with amazing results. Frances H. Arnold, an American who was given one-half of the prize, used ‘directed evolution’ to ___(13)______ variants of naturally occurring enzymes that could be used to ____(14)_____biofuels and pharmaceuticals. The other half went to George P. Smith, also of the U.S., and Sir Gregory P. Winter, from the U.K., who evolved antibodies to ___(15)______. Autoimmune diseases and even metastatic cancer through a process called phase display.