39. What would be the best title for the text? (A) Music and Musicians (B) The history of the guitar (C) Music and Musical Instrument (D) The Most Popular Musical Instrument

41. What problem does Thane have according to the text? (A) The city doesn’t have enough electricity for its people. (B) The city’s main hospital lacks money for energy costs. (C) The city needs more water heaters for its people. (D) The city needs to control its population growth.