Question ID:PT25 S4 Q13 Passage:Unlike other primroses, self-pollinating primroses do not need to rely on insects for pollination.  In many years insect pollinators are scarce, and in those years a typical non-self-pollinating primrose produces fewer seeds than does a typical self-pollinating primrose.  In other years, seed production is approximately equal.  Thus, self-pollinating primroses have the advantage of higher average seed production. Aside from seed production, these self-pollinating primroses are indistinguishable from non-self-pollinating primroses.  Nevertheless, self-pollinating primrose plants remain rare among primroses. Stem:Which one of the following, if true, most helps to resolve the apparent discrepancy in the information above? Correct Answer Choice:BChoice A:Insects that collect pollen from primroses do not discriminate between self-pollinating primroses and non-self-pollinating primroses. Choice B:When insect pollinators are scarce, non-self-pollinating primroses produce larger seeds that are more likely to germinate than are seeds from self-pollinating primroses. Choice C:Self-pollinating primroses that are located in areas with few insects produce no fewer seeds than do self-pollinating primroses that are located in areas with many insects. Choice D:Many primroses are located in areas in which the soil conditions that are optimal for seed germination are not present. Choice E:Self-pollinating primroses can be assisted by insects during pollination but do not require the assistance of insects to be pollinated.