Navpre wrote:
I believe D is correct.
It is mentioned in sentence "henceforth" (although we did not pay much attention to things between comma) which is emphasizing that the policy is followed till today and from now on it should be implemented quickly.
Please correct me if i am wrong.
I like the point that Navpre makes. When we are looking at verb tense, we have some grammatical things to consider as well as some meaning concerns. Grammatically, there are no issues between D and E. Therefore, we need to look at the meaning.
Past perfect is for past actions, but so is present perfect. The difference is that past perfect is for actions that happened in the past
before another past action, while present perfect is for actions that happened in the past at an unspecified time, that happened in the past at multiple times, or that happened in the past and either affect today or are still true today. This is why "in the past" does not affect the outcome.
So, which tense? As others have mentioned, in order to use past perfect, we need to have another past action that comes after the past perfect action (and usually this past action needs to be the point in time at which the past perfect action stops). However, we do not have that here. Instead we have the present tense verb "states." This means we need to use either simple past or present perfect to describe the past action (no progressive tense because we are not referring to something happening during the past action).
So, why present perfect? In situations like this, look at the time modifier. Here, "henceforth" tells us that the change in policy starts now. Therefore, the past way of implementing the policy occurred until the present. This is exactly one of the uses for present perfect (occurs until now). We cannot use simple past unless we want to refer to a specific time period in the past instead of up until now.
Navpre: We always pay attention to things in between the commas (often times they create funny modifier errors) - the reason why you are told to ignore them is that they present extraneous information (information that is not necessary to distinguish the subject from other, similar subjects).
Therefore, I think the OA and OE are wrong. D is the correct answer.
This is a good example of why I advise test-takers to avoid questions that are not official GMAT questions. Often times they have major mistakes. You should only work verbal questions from the official guides, from GMATPrep, and from GMAT Paper Tests if you want accurate questions/answers.
yuvrajpratap wrote:
if I am right then ans should be d and not e because "strategy guidelines" is plural and requires have.
If you had to choose between "has" and "have," which are both for the present perfect construction, then you would be correct. However, "had," which is for the past perfect construction, is correct for both singular and plural subjects.