The costume designer's choices in deciding how to costume a play such as Oedipus El Rey or The Moors are primarily dependent upon:

Select one:

a. the directorial concept

b. the performers' requests

c. the script

d. the fabric available

The costume designer's choices in deciding how to costume a play such as this, depends primarly upon: a. the directorial concept.

Explanation:

For the construction of a costume play such as Oedipus and The Moors, since they are classic plays they both have a historical context by which that play is developed. The directorial concept would refer to this context to direct the play.

The directotial concept is the way a director visualizes how the play is going to be. From this vision or idea all the other elements in a play are going to develop. The design of the constumes have to go by this concept.