Birthplace of Count Basie's band, The Barons of Rhythm, Kanas City ear

Imo A

A correct
B There tense error in B " influence those styles have had" have here is unnecessary as we are talking about past event that has already happened so we have to just use had.
C Their is incorrect in C as the subject is singular "Kanas City". So leave it
D use of pronoun which is clearly wrong here as it refers to "first "City of Music" title" which does not make sense here .
E Again repeats the same error of D and C

VERITAS PREP OFFICIAL SOLUTION:

Three clear decision points present themselves in the answers: 1) the choice between “because” and “which” to start, 2) the choice between “its” and “their” for a pronoun, and 3) the choice between “have had” and “had” at the end. Since pronoun decision points tend to be among the easiest to assess, start there: the pronoun is referring back to the singular “Kansas City” so you can eliminate (C) and (E) because of the plural “their”.

Next look at the choice of verb tense: (A) contains the simple past tense “had” and (B) and (D) contain the present perfect “have had”. Now think about the logical timeline created by the different tenses. For (A) “Kansas City earned the title because of its jazz history and the influence those styles HAD AT THAT TIME on musicians at home and abroad.” For (B) “Kansas City earned the title because of its jazz history and the influence those styles HAVE HAD SINCE THEN on musicians at home and abroad.” They did not earn the title because of what has happened since that date! The timeline created with the present perfect is illogical, so the correct answer must be (A).

Note, also, that with the "which" vs. "primarily because of" decision point, "which" begins a relative modifier which must modify the adjacent noun "title." This is illogical, as the nation's "City of Music" title wouldn't be based on Kansas City's history of jazz - it's Kansas City's earning of that title that came because of its history of jazz. (D) and (E) share this error.

look at choice b, have done is used to show a past action which has no specific point of time or a past action continueing until present.

have done can be used to show a past action. in this case it is interchangeble with past simple. but why "earned" is not "have earned'.

so, we have to keep the tense simple. earned go with had and have earned go with have hd.

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