My explaination goes like this. Please correct me as I got OA wrong.
(E) All of the pigweed seeds that are already on the surface of the soil before the field is plowed will germinate.
Extreme language and irrelavent --eliminate
(D) The pigweed seeds that are churned up to the surface of the soil during the plowing will not germinate unless they are redeposited under the surface of the soil.
This one actually makes sense to me and I marked this one as correct. Reason: in the stimulus, focus on the line "The
brief exposure of the seeds to sunlight stimulates receptors". Which means that the seeds have to be redeposited under the soil to make germination work. D perfectly captures this point.
(C) Fewer pigweed plants will grow in the field if it is plowed just before sunrise than if it is plowed just after sunset.
Eliminate : Time is irrelavent here because at whatever time seeds are ploughed, they will eventually get the sunlight as and when the sun rise.
I believe that the point here is that whether they are redeposited after a BRIEF EXPOSURE to sunlight or not.
(B) Fewer pigweed plants will grow in the field if it is not plowed at all than if it is plowed only at night.
Eliminate: If seeds are not plowed AT ALL, how will they be able to capture sunlight? Hence, receptors will not be stimulated and germination will not happen
(A) Fewer pigweed plants will grow in the field if it is plowed only at night than if it is plowed during the day.
Eliminate : Time is irrelavent here. Same reasoning as C.
but this one is correct.
Help me out guys.
Thanks
-V