Read the Following Scenario and Answer the Question Below

Read the following scenario and answer the question below.
Many biologists and environmental educators are interested in maintaining biodiversity in urban landscapes, where preserves or reserves are scarce unless land has been set aside for them in urban planning. Nonetheless, they have discovered that making even small changes in commercial and residential landscaping can help promote biodiversity. Some of the changes that have been recommended and are having success are using native species for street trees and for decorative landscaping, reducing pesticide use on lawns and gardens and reducing fertilizer use through composting and mulching. Also, managers of schools, larger businesses and residences are encouraged to increase habitat diversity by creating ʺlandscape islandsʺ that include larger trees surrounded by shrubs and herbaceous plants. Landscape islands ideally should include native species, mixed with exotic ornamentals at the discretion of the land owners.
-In addition to the butterfly project, you decide to stop spraying the pesticides that control lawn pests. Over the next year, you notice that the lawn grass doesnʹt grow as well, but many other species of plants invade the lawn, many of them native species. This will result in all of the following, except _______________.

A) competition between the lawn grass and the new species that invade the area
B) an increase in bird species in your yard
C) an increase in pollinating insects visiting your lawn and gardens
D) an increase in herbivorous insects and the small predators that eat them
E) lower survival rates for the caterpillars and butterflies