Moral philosophy is sometimes described as "duty-" or "obligation-based" ethics

Deontological ethics

Explanation:

Deontological ethics  is defined as the concept which is based on defining performed activity is right or wrong in respect to the regulation series. It basically relies on defining the ethics of action rather than focusing on the consequences.

Deontological ethics can be determined as the duty to be performed by any person by taking right actions according to the morality. It makes a person follow the correct norms and regulation .

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer