Final answer:
Tina can support her protest against PCBs by advocating for the enforcement of environmental acts and regulations, such as the POPs Convention, and raising awareness about the harmful effects of PCBs.
Step-by-step explanation:
Tina can support her protest against the use of polychlorinated biphenyl (PCB) by advocating for the enforcement of environmental acts and regulations. One act that can help her cause is the Persistent Organic Pollutants (POPs) Convention. This international treaty aims to eliminate or restrict the production and use of POPs, including PCBs, due to their harmful effects on human health and the environment. Tina can also support her protest by raising awareness about the detrimental impacts of PCBs and encouraging individuals and industries to adopt alternative, non-toxic substances.