Usually entails a professional with specialized expertize meeting with other professionals, with the goal being to improve the latter's work with current or potential clients

d. Consultation

Explanation:

This question is incomplete. The options for this question are:

a. Advocacy

b. Advisement

c. Supervision

d. Consultation

The term of consultation is usually referred to a meeting with a professional or expert for purposes of gaining information, or for discussing a certain topic and collaborating to solve it.  Therefore, it is a meeting that takes place to make an improvement on someone's work.

Therefore, we can say that consultation usually entails a professional with specialized expertise meeting with other professionals, with the goal being to improve the latter's work with current or potential clients

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.