The correct answer is C. Astringent.
Astringent is an adjective that means "causing contraction of tissues, especially of the skin and mucous membranes." It can also be used as a noun to refer to a substance that has this effect.
The other options are incorrect because they are not spelled correctly. Astrinjent is missing the "g" in the middle, Estrinjent is missing the "a" at the beginning, and Estringent is missing the "n" at the end.
I hope this helps!
