With at least $120 billion per year spent on outsourcing and much more at stake when considering productivity improvements and savings, ensuring that outsourcing works has become a top priority for management professionals.
Correct answer AMeaning analysis: Ensuring outsourcing works has become a top priority (Why?), because 120 billion dollars are spent on outsourcing and productivity improvement/savings considerations has put much more on stake.
Grammar analysis: The original sentence is correct.
The subject is a gerund and the verb number agrees (Ensuring that outsourcing works)
The phrase (With at least $120 ....) correctly modifies the reason for ensuring that outsourcing works
A. With at least $120 billion per year spent on outsourcing and much more at stake when consideringCorrectB. To spend $120 billion per year spent on outsourcing, and much more onIncorrect: This option changes the meaning. It seems to imply that ensuring that outsourcing works has a purpose to spend all the 120 billion dollars, rather than treating it as a liability. Secondly , + and makes it a separate clause and hence there is missing verb error in this option
C. Spending least $120 billion per year on outsourcing, and much more at stake when consideringIncorrect This option repeats the missing verb mistake as in option B.
D. Having at least $120 billion per year spent on outsourcing, and much more at stake when consideringIncorrect This option repeats the missing verb mistake as in option B. 'comma + and' implies that much more at stake when considering stands as an independent sentence, however it cannot stand as an independent sentence
E. Needing to spend at least $120 billion per year on outsourcing, and much more at stake when consideringIncorrect This option has a subtle meaning error. It implies that there is a need to spend 120 billion dollars, however the first option portrays that 120 billion dollars is a liability. Secondly this option repeats the missing verb mistake as in option B. 'comma + and' implies that much more at stake when considering stands as an independent sentence, however it cannot stand as an independent sentence