one SC need your comment

ertanch

Following the destruction of the space shuttle Challenger, investigators concluded that many key people employed by the National Aeronautics and Space Adminnistration and its contractors work an excessive amount of errors in judgment. (D) overtime, a practice that has the potential for causing (E) overtime, a practice that can, potentially, cause The Answer is D But I selected E. Is there any good explanation for that. Or the answer is wrong.