You ask a question pertaining to the idiom that continues to confuse a lot of GMAT takers. On GMAT, "due to" and "because of" are used very specifically.
The sentence that you have mentioned is incorrect because here "due to" has been used to present the reason for a action. Here "due to" modifies the action "have succeeded". This is considered in correct on GMAT. Only "because of" can present reason for actions.
For more details and example on the usage of these two idioms, please read the following article:due-to-vs-because-of-140393.html
Hope this helps.
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