The passage discusses how efficiency, although beneficial in certain settings like the shop or factory, can intrude into other areas, such as play or personal life, and dominate them. The key point is that efficiency doesn't stay confined to its designated areas but can spill over into other aspects of life, becoming all-pervading. This aligns with the first option, which suggests that efficiency can become all-pervading.
Thus, the correct answer is (A) Efficiency can become all-pervading.