Wether or not

[Prasjustme]

[DELETED b/c the source was reported to be GMAT Sets - the GMAT Sets illegally reproduce copyright material from GMAC and, as such, can't be hosted on our forum. Sorry for the inconvenience.]

[StaceyKoprince]

Please don't forget to post the author of the problem - we can't host questions without proper copyright attribution.

[prasjustme]

Thanks Stacy,
I found out that Wehter or not construct is not acceptable on GMAT
This is Sets questions i guess

[DELTA750]

C : "hat more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than"


A: does not start with "that " which is required
B: does not start with "that " which is required
C: Correct Choice
D: required "whether" after "to determine"
E: required "whether" after "for determining"