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30 Jul 2020, 23:32
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It doesn't make sense to say " costly requirements". We can say a costly item or a costly purchase, but in this case the requirements were costly, well I don't think so. This leads me to eliminate A, B and C. Both irrigation and application of commercial fertilizer should be of earlier high yielding varieties, so I chose E. In D, "that was..." modifies only for irrigation
31 Jul 2020, 00:47
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saro Yes, "that" can definitely modify a compound or plural subject.
31 Jul 2020, 01:00
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ttpanda Actually, we can say "costly requirements." If fulfilling a requirement incurs a great cost, then we can refer to the requirement as costly. Therefore, we have to dig into the choices a little further:
A and B are out because of "requirements . . . by varieties." The varieties themselves didn't create these requirements directly.
C is out because of "requirements for application," but more importantly, C and D are both out because of "application of commercial fertilizer and irrigation." It's not at all clear here that "irrigation" should be parallel to "application." It ends up looking like irrigation is a second item to be applied, and that doesn't work at all. For this reason, we could also read "that" in D as applying to "application," but by that point we've already cut D, so there's no need to worry about that.
A and B are out because of "requirements . . . by varieties." The varieties themselves didn't create these requirements directly.
C is out because of "requirements for application," but more importantly, C and D are both out because of "application of commercial fertilizer and irrigation." It's not at all clear here that "irrigation" should be parallel to "application." It ends up looking like irrigation is a second item to be applied, and that doesn't work at all. For this reason, we could also read "that" in D as applying to "application," but by that point we've already cut D, so there's no need to worry about that.
