The `Basel Convention` is indeed primarily aimed at protecting human health and environment against the adverse effects of hazardous wastes. The convention specifically focuses on the control of transboundary movements of hazardous wastes and their disposal, ultimately aiming to reduce and eliminate such movements.

Option 2, Persistent Organic Pollutants (POPs), is incorrect as the Stockholm Convention specifically addresses the reduction and ultimate elimination of POPs.

Option 3, Mercury, is also incorrect. The Minamata Convention is the one that focuses on protecting human health and the environment from anthropogenic emissions and releases of mercury and mercury compounds.

Finally, option 4, Chemicals and Pesticides, although they may fall under the umbrella of hazardous substances, the Basel Convention`s primary focus is not on them, rather, it specializes in hazardous wastes. The Rotterdam Convention focuses on the prior informed consent procedure for certain hazardous chemicals and pesticides in international trade.