languages

[mgmt_gmat]

Nobody knows exactly how many languages there are in the world,
partly because of the difficulty of distinguishing between a language
and the sub-languages or dialects within it, but those who have tried
to count typically have found about five thousand.
A. and the sub-languages or dialects within it, but those who have
tried to count typically have found
B. and the sub-languages or dialects within them, with those who
have tried counting typically finding
C. and the sub-languages or dialects within it, but those who have
tried counting it typically find
D. or the sub-languages or dialects within them, but those who tried
to count them typically found
E. or the sub-languages or dialects within them, with those who have
tried to count typically finding

[komal]

Nobody knows exactly how many languages there are in the world,
partly because of the difficulty of distinguishing between a language
and the sub-languages or dialects within it, but those who have tried
to count typically have found about five thousand.
A. and the sub-languages or dialects within it, but those who have
tried to count typically have found
B. and the sub-languages or dialects within them, with those who
have tried counting typically finding
C. and the sub-languages or dialects within it, but those who have
tried counting it typically find
D. or the sub-languages or dialects within them, but those who tried
to count them typically found
E. or the sub-languages or dialects within them, with those who have
tried to count typically finding

i choose B

[money9111]

i also say B but I wish C used "Them" instead of the 2nd it, because then I would have chosen C....