Final answer:
Donating funds to charity is considered ethical behavior, contrasting with the unethical practices of manipulating financial records and emitting toxic waste gas, which harm community and environment (2).
Step-by-step explanation:
Of the behaviors listed, donating funds to charity is considered ethical behaviour. Ethical behavior typically refers to actions that are morally right and are beneficial to both individuals and the wider community. For example, donating funds to charitable organizations can support various causes and aid those in need, reflecting a positive and ethical contribution to society.
In contrast, 'cooking the books' to meet tax-exempt requirements is unethical as it involves manipulating financial records to avoid paying taxes, which is illegal and harms the societal collective by evading financial responsibilities. Similarly, emitting toxic waste gas into the air is also unethical, as it harms the environment and poses health risks to the public, going against the principles highlighted by ecoethics and the issues of practical ethics discussed in the context of conservation biology and corporate responsibility.