$140\mathrm{.}067$ points

Alternate approaches such as transactional memory or OpenMP are useful, because

All of the above.

some race condition problems that cannot be solved using synchronization mechanisms such as mutex locks and semaphores can be solved using these alternate approaches.

developers do not need to identify race conditions when using these approaches.

these approaches scale much better than synchronization mechanisms such as mutex locks and semaphores as the number of threads increases.