[quote="dvtohir"]Guys,
Could you try the SC below? Please explain your answer.
Q29. Researchers agreed that the study of new treatments for heart attack patients was extremely important but [u]more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than[/u] the balloon procedure by itself.
A. more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than
B. more research was needed for determining whether or not balloon angioplasty preceded by ultrasound is any better for heart attack patients than is
C. that more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than
D. that more research was needed to determine that balloon angioplasty preceded with ultrasound was any better for heart attack patients than
E. that more research was needed for determining that balloon angioplasty preceded by ultrasound is or is not any better for heart attack patients than is[/quote]
C for me; paralel "..agreed that... but that.."
A/B- "...agreed that... but that... ", so B and A are out
D-changes the meaning of the original sentence; "to determine whether" should be the correct form in this sentence (there is a level of uncertainty in the original sentence)
E- "for determining" is wrong; "than is" is also wrong