D) gap, butHere’s How to Crack It
First   and foremost,   it’s    important   to  notice  the question.   This    one is  asking  for the alternative that    would
NOT be  acceptable, so  we’ll   need    to  find    an  answer  that    doesn’t work.
In  the meantime,   let’s   go  through the steps.  What’s  changing    in  the answer  choices?    STOP,   HALF-STOP,
and GO  punctuation.    Use the Vertical    Line    Test    between the words   gap and what.   The idea    before  the
line,   Most    people  are familiar    with    the idea    of  a   gender  pay gap,    is  complete.   The idea    after   the line,
what     most    people  don’t   realize     is  just    how     persistent  that    pay     gap     has     been,   is  also    complete.
Therefore,  we  need    either  STOP    or  HALF-STOP   punctuation.
Choices (A) and (B) definitely  provide the punctuation we  want.   Choice  (D) doesn’t look    like    it  does,   but
remember!   But  is  one     of  the     FANBOYS,    and     comma   +   FANBOYS     is  one     of  the     forms   of  STOP
punctuation!    Therefore,  the only    choice  that    doesn’t work    in  the context is  (C),    so  it  is  the alternative that
would   NOT be  acceptable.
Notice  how important   that    word    NOT was in  this    question.   If  you missed  it, you might   have    thought the
question    had three   correct answers!
Let’s try another.
The  2 size of  the gap may have    narrowed,   but we  still   have    a   long    way to  go.2.Which of  the following   substitutions   would   be  LEAST   acceptable?
A) magnitude
B) proportion
C) vastness
D) immensityHere’s How to Crack It
Again,  the question    asks    for the LEAST   acceptable, so  find    and eliminate   answers that    work.   In  this    case,
we  need    something   similar in  meaning to  the word    size    as  it  is  used    in  this    sentence.   All four    words   mean
something   similar to  size    in  different   contexts,   but we  want    something   that    refers  to  just    how large   the gap
is, so  (A),    (C),    and (D) would   work.
Choice  (B) does    give    a   synonym for the word    size,   but it  means   something   more    like    “dimensions”    than
“largeness,”    so  it  is  the LEAST   acceptable  of  the substitutions.