You will be given a definition of a task first, then some input of the task.
In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

A 2000 study by P. F. Coogan, et al. states that this chemicalis found to be genotoxic and can bind to estrogen receptors. It is usually synthesized in the presence of zinc chloride or sulfuric acid by the condensation of its namesake (*) anhydride and phenol, and is closely related to triphenylmethane. One of its forms has a charge of negative three due to the removal of two extra hydrogen ions, and occurs only in solutions with pH greater than 12, and in solutions with pH less than 0, it appears orange. It was at one point used as a laxative, where it dyed feces pink. For 10 points, identify this indicator, which is colorless in acids and pink in bases.
Output:
Science