Select all the reasons that engineering is considered a profession.

Engineering involves extensive training, knowledge essential to society, and a code of ethics that promotes the public good.

All engineers are licensed to perform their work.

Engineers generally earn above$-$average salaries.

Engineers are employed in the same occupation, serving moral ideals beyond what is required by the law, morality, and public opinion.

Engineers agree to provide competent service and regulate their conduct by ethical standards. In return, the public provides social recognition, prestige, and freedom to regulate themselves.