A and C are close and C is better as it put the subject forward.

Errors with other:
A. for the global manager is the subject...Dulhe ki shadi me dulha hi pichhe...better if some option keep it forward as c
B. they can refer to either of global managers or clients
C.Best
D. them can refer to either of global managers or clients
E. Akward

sahi hai ji.. makes sense.

A is wrong because " understanding" can not be "working"

B is wrong because there is no vert after "issue" if "issue" is ....

D is wrong because "them" and "for manager" is redundant

e, is wrong because "issues" can not "find ... important..."

Hi Aj,

In my opinion the reasons for elimination are as below:

When working with overseas clients, an understanding of cultural norms is at least as important as grasping the pivotal business issues for the global manager.

A. When working with overseas clients, an understanding of cultural norms is at least as important as grasping the pivotal business issues for the global manager.
When working.....modifying an understanding. Not correct. Managers are working not understanding.

B. When they work with overseas clients, understanding cultural norms is at least of equal importance to the global manager as grasping the pivotal business issues.
When they work.....modifying understanding. Not correct. Managers are working not understanding.


C. For global managers working with overseas clients, understanding cultural norms is at least as important as grasping the pivotal business issues.
Correct.

D. For global managers working with overseas clients, an understanding of cultural norms is at least as important to them as that they grasp the pivotal business issues.
Parallelism issue: understanding not parallel with grasp. Them unnecessary and instead of that better would have been possesive "their grasp on"....which too would have been wrong....as non parallel with understanding.

E. Global managers working with overseas clients find an understanding of cultural norms to be equally important as grasping the pivotal business issues.
This changes the original meaning of the sentence. It says Managers have already "realised" that understanding is important. But original sentence says that it is the "requirement" of manager.

Here is how I approached this question.

A. When working with overseas clients, an understanding of cultural norms is at least as important as grasping the pivotal business issues for the global manager.

B. When they work with overseas clients, understanding cultural norms is at least of equal importance to the global manager as grasping the pivotal business issues.

C. For global managers working with overseas clients, understanding cultural norms is at least as important as grasping the pivotal business issues.

D. For global managers working with overseas clients, an understanding of cultural norms is at least as important to them as that they grasp the pivotal business issues.

E. Global managers working with overseas clients find an understanding of cultural norms to be equally important as grasping the pivotal business issues.

Eliminate A & B: When requires a specific time, which is not provided here.
Eliminate D: awkward
Eliminate E: to be ... as...? should be as... as...

C: best answer: working ... understanding... grasping...

IMO C

I dismissed C because...
i have read that when there is clause and noun or modifier and noun ...it modifies thing near to it...
and
working with overseas clients, understanding cultural norms
It is not that clients who have understanding of cultural norms....
so....i dismissed it....