Possessing disciplinary adequacy is having

a. A multidisciplinary understanding of a complex topic.
b. What you need to know about an unfamiliar discipline in order to draw
upon its insights and critically analyze them.
c. An interdisciplinary understanding of a complex topic.
d. Sufficient depth in a discipline to write an article for a disciplinary journal.

b. What you need to know about an unfamiliar discipline in order to draw
upon its insights and critically analyze them.