Answer: A scrim is <u>a thin backdrop curtain. </u>
Explanation: <u>The word "scrim" is a noun and it is used mainly to refer to a woven or cotton fabric that is used to design a curtain</u>. Moreover, "<u>scrim" is generally used for theatre curtains;</u> however, it can also be used for making clothing. Taking this into consideration, <u>the option that fills in the blank is "a thin backdrop curtain"</u>. In contrast, "a spinning stage", "a literary philosophy" and "another term for playwright" are definitions that belong to other terms.
