#12 ____ was an important singer, songwriter and instrumentalist who wrote "If I Had A Hammer" and was called to testify before the House of...

#12 ____ was an important singer, songwriter and instrumentalist who wrote "If I Had A Hammer" and was called to testify before the House of Un-American Activities Committee.

  a.Hank Williams 

  b.Woody Guthrie 

 c. Bob Dylan 

 d. Pete Seeger