Answer-Which of the following is thickening agent

Thickening agents, or thickeners, are substances which, when added to an aqueous mixture, increase its viscosity without substantially modifying its other properties, such as taste. They provide body, increase stability, and improve suspension of added ingredients. Examples of thickening agents include polysaccharides starches, vegetable gums, and pectin, proteins eggs, collagen, gelatin, blood albumin and fats butter, oil and lards. All purpose flour is the most popular food thickener, followed by cornstarch and arrowroot or tapioca. All of these thickeners are based on starch as the thickening agent.