Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks

During the last 400 years, most scientists have (1) ________ on mathematics in their development of their inventions or discoveries. However, one great British scientist, Michael Faraday, did not make (2)__________of mathematics. Faraday, the son of a poor blacksmith, was born in London in 1791 and had no (3) _________ beyond reading and writing.

In 1812 Faraday was hired as a bottle washer by the great chemist Humphry Davy. Later, Faraday became a greater scientist than Davy, making the last years of Davy's life embittered (4) __________ jealousy. Faraday made the first (5)__________ motor in 1821, a device that used electricity to produce movement.

(1) ________

• A. 
  relied
• B. 
  insisted
• C. 
  based
• D. 
  elaborated