Concept:Glomerular filtrate contains small, soluble substances that can pass through the kidney's filter; large proteins and cells stay in the blood.Explanation:Glucose is a small, soluble molecule, so it easily passes through the glomerular filter into the filtrate.Fibrinogen, albumen, and blood platelets are too large to pass through the normal glomerular membrane.Thus, among the given options, only glucose is present in the glomerular filtrate.Answer:A. glucose