Guitar Strings often go dead - become less responsive and bright in tone - after a few weeks of intense use. A researcher whose son is a classical guitarist hypothesized that dirt and oil, rather than changes in the material properties of the string, were responsible. Which of the following investigations is most likely to yield significant information that would help evaluate the researcher's hypothesis?

• Effect : Guitar Strings go dead after few weeks of intense use
  
  Cause: Dirt and oil and not changes in material properties.
  
  What do we need to do help the classical guitarist's son?
  
  Prove that either Dirt and Oil cause guitar strings to go dead or prove that changes in material properties don't make guitar strings to go dead..
  
  for that we need options
  so the question is closed
• 11 years agoHelpfull: Yes(5) No(2)
• Hey Friend.. No options given here. So, not able to solve this. Hence, it is closed.
• 11 years agoHelpfull: Yes(2) No(5)
• (A) Determining if a metal alloy is used to make the strings used by classical guitarists
  (B) Determining whether classical guitarists make their strings go dead faster than do folk guitarists
  (C) Determining whether identical lengths of string, of the same gauge, go dead at different rates when strung on various brands of guitars
  (D) Determining whether a dead string and a new string produce different qualities of sound
  (E) Determining whether smearing various substances on new guitar strings causes them to go dead
  
  option E is the answer
  The researcher tells us that dirt and oil rather than material properties of the string are responsible for strings to go dead and ques asks which investigation will evaluate the researcher hypothesis. and therefore if we apply various substances on the string and see the result then we will see what the substance working on the string.
• 11 years agoHelpfull: Yes(2) No(3)
• @ GIRIDHARAN
  
  how u know such kind of options and how can U judge them
  
• 11 years agoHelpfull: Yes(2) No(1)