Final answer:
The primary treatment methods for a rodent infestation are traps, baits, and exclusion. Horse hair is not related to rodent control. Options B (Traps/baits) and C (Traps/exclusion) are effective primary treatments.
Step-by-step explanation:
The question pertains to the control of rodent infestations and the methods that can be considered primary treatment options. The use of traps and baits is a common primary starting point for dealing with rodents. Exclusion, which involves blocking off access points to prevent rodents from entering a space, can also be effective. Therefore, the options involving traps, baits, and exclusion are generally seen as the primary methods for addressing a rodent problem.
In the context of the provided options, B. Traps/baits and C. Traps/exclusion would both be valid primary treatment methods. Baits are used to attract and poison the rodents, while traps are used to physically catch them. Exclusion is a preventive strategy that can be highly effective in long-term control. The inclusion of 'Horse hair' does not have any known association with rodent control and thus can be dismissed as an irrelevant option.