True or False: Mosquitoes can transmit multiple diseases at the same time.

Mosquitoes have the capability to transmit multiple diseases simultaneously, making the statement true. When a mosquito is infected with different pathogens, it is possible for it to spread several diseases during a single bite. Each pathogen can be present in the mosquito's saliva, and as the mosquito feeds on its host, these pathogens can enter the host’s bloodstream together, leading to co-infection.

This vectorial capacity of mosquitoes is particularly significant in areas where multiple vector-borne diseases are endemic, as it complicates public health efforts and disease management strategies. For example, a single mosquito could potentially transmit both the dengue virus and the Zika virus if both are present in the mosquito at the same time.

The other options either inaccurately restrict the capabilities of mosquitoes or misinterpret the conditions under which these transmissions can occur. Therefore, the assertion that mosquitoes can transmit multiple diseases at once is correct.