What is meant by a 'critical mindset towards ethics'?

Question $1$Select one or more:

a$.$

Practising and becoming skilled at thinking of the best solutions to problems in your work

b$.$

Understanding generally what ethics is and some of the ethical frameworks for making decisions

c$.$

Developing an approach to problems at work that reliably identifies negative aspects.

d$.$

Being able to think through problems and situations from an ethical perspective and make good decisions