(A) which includes the establishment of size limits for shark catches, closing
1) "which" usually modifies the nearest "noun" or "noun + modifier": Here, "which" seems to modify "
shark population" or "
a decline", meaning that "shark population" or "decline" includes
the establishment...
closing state waters..., and
requiring. Illogical
2) Parallelism issue: ...
the establishment...
closing state waters..., and
requiring(B) which includes establishing limits to the size of sharks that can be caught, closing
1) "which" usually modifies the nearest "noun" or "noun + modifier": Here, "which" seems to modify "
shark population" or "
a decline", meaning that "shark population" or "decline" includes
the establishment...
closing state waters..., and
requiring. Illogical
2) "that", an essentiol modifier, narrows down the noun it modifies: "sharks
that can be caught"---> here, "that" gives the meaning that there some sharks that can be caught and other sharks that cannot be caught. For example, "Hammerhead sharks" can be caught, while "Great white shark" cannot. Besides, (B) says that some countermeasures include establishing limits to the
SIZE of sharks that can be caught. ILLOGICAL: The intended meaning is that there should be limits on shark catches, not the size or types of sharks.
(C) which include the establishment of size limits for shark catches, the closing of
1) the same problem with "which"
2) Parallelism issue: ...
the establishment...
the closing state waters..., and
requiring(D) including establishing size limits for shark catches, closing
1) Unlike some other "comma + V_ing", which usually modifies the nearest action and its agent, "comma + including" modifies a noun, which can be anywhere in the preceding clause, and serves to mean "for example".
Now, Let's find a plural noun that can include the three actions:
estalishing...
closing..., and
requiring.
Yes, You are right! "remedies": "remedies" can include the three actions:
estalishing...
closing..., and
requiring.
(E) including the establishing of limits to the size of sharks that are caught, the closing of
1) Parallelism issue: ...
the establishment...
the closing state waters..., and
requiring