Question 14: VerticalCOMPREHENSIONRead the following unedited passage and pick the statement(s) that is/are accurate among the options provided.Natural water environments are threatened by several harmful chemicals derived from artificial products [1]. Many of these chemicals are endocrine disrupting chemicals (EDCs), which pose a threat to the environment and human health (e.g., causing reproductive and sexual abnormalities) [2]. Bisphenol A (BPA), a representative EDC, is highly soluble in water (120 to 300 mg/L), and it is found in drinking, surface, and wastewaters because it is not completely removed during conventional wastewater treatment [5]. Several methods, including physical separations ([6], [7]), biological methods ([1], [5]), and advanced oxidation processes (AOPs) ([2], [8], [9]), have been developed to remove BPA from aqueous solutions. Separation methods, such as adsorption and filtration, are not suitable for low concentrations of BPA when considering the removal efficiency and cost. Additionally, detachment and reprocessing treatments for BPA are required after separation from solution [10]. BPA is readily degraded by microorganisms [11]; however, when using biological methods, the treatment time typically increases linearly with the concentration of BPA.EDCs, which are a type of BPA, are known to result in reproductive and sexual abnormalities.Conventional wastewater treatment is found to be ineffective at completely removing BPA, as it does not dissolve very well in water.Owing to the removal efficiency and cost, physical separation methods such as adsorption and filtration have been found to be unsuitable for removing low concentrations of BPA from aqueous solutions.Biological methods can be used to remove BPAs from aqueous solutions, but a limitation of this method is that the treatment time is generally directly proportional to the concentration of BPA.