To solve this problem, we need to match the processes in Column I with their corresponding locations or functions in Column II. Let's analyze each process:$\newline \bullet$a. Ultrafiltration:$\newline$ - Ultrafiltration is the process of filtering blood to form urine, which occurs in the Malpighian corpuscle.$\newline$ - This matches with iv.$\newline \bullet$b. Concentration of urine:$\newline$ - The concentration of urine primarily occurs in the Henle’s loop, where water and salts are reabsorbed.$\newline$