IMO: A

Direct (A)

I dont know what this prob tests? IMO A though.

(A) is my pick too.

Regards
NItin

So, lets try and explain this interesting problem

Some who favor putting governmental enterprises into private hands suggest that
conservation objectives would in general be better served if private environmental groups were
put in charge of operating and financing the national park system, which is now run by the
government.
Which of the following, assuming that it is a realistic possibility, argues most strongly against
the suggestion above?

A. Those seeking to abolish all restrictions on exploiting the natural resources of the parks
might join the private environmental groups as members and eventually take over their
leadership.
B. Private environmental groups might not always agree on the best ways to achieve
conservation objectives.
C. If they wished to extend the park system, the private environmental groups might have to
seek contributions from major donors and general public.
D. There might be competition among private environmental groups for control of certain
park areas.
E. Some endangered species, such as the California condor, might die out despite the best
efforts of the private environmental groups, even if those groups are not hampered by
insufficient resources.

The conclusion here is that conservation objectives of the national park would be better achieved if private enterprises were put in charge of the park rather than government bodies.

A-- Says that if private entities are put in charge, then the objectives itself may get abolished because people seeking to abolish all restrictions may join the private enterprises. This directly refutes the conclusion and is the best weakener. SO A is correct.
B--- says that private entities may not agree on arriving at the best way to achieve conservation objectives but this does not necessarily mean that the objectives cannot be met. B is a close second but then we have a better choice in A, so we can leave it alone.
C--- talks about fundraising and that is not the issue at hand.
D--- is again out of context.
E--- is totally out of context.


So, as agreed by everyone above me aswell, answer IMHO is A!!!