The correct option is A Rodalia cardinalis
Rodolia cardinalis is used commercially to combat scale insects injurious to citrus orchards, specifically Icerya purchasi, the cottony cushion scale. Orchard owners use this form of Integrated Pest Management (IPM) use of a variety of strategies for the control of insect pests, including cultural, chemical, and biological controls while restricting and altering the use of pesticides--to control a pest population always present. The natural predator of Icerya purchasi (cotton cushion scale) is used (R.cardinalis) instead of pesticides and other such materials.