Which of the following is classified as a carbohydrate-based pesticide?

Avert is classified as a carbohydrate-based pesticide because it contains a specific active ingredient that interferes with the metabolic processes of target pests, particularly cockroaches and other insects. The primary action of carbohydrate-based pesticides is to disrupt the ability of these pests to utilize carbohydrates for energy, leading to their inability to survive.

In contrast, the other options listed are formulated from different active ingredients that operate through various mechanisms. For instance, Ficam contains an active ingredient that is a type of insecticide rather than being carbohydrate-based. Boric acid serves as a desiccant and results in death primarily through dehydration and other modes of action rather than direct carbohydrate disruption. Tempo, on the other hand, is a synthetic pyrethroid that affects nerve function and does not have a carbohydrate basis. Thus, Avert stands out as the only option that fits the classification of carbohydrate-based pesticides, focusing on the metabolic impact on pests.