A major concern among Bangladeshi archaeologists today is the preservation of our archaeological sites, ----are threatened by development.
A
of which money
B
many of which
C
many of them
D
which many
Correct Answer: many of which
A major concern among Bangladeshi archaeologists today is the prepreservation of our archaeological sites, many of which are threatened by development. Here, many of which meaning যাদের মধ্যে।