To solve this problem, we need to identify the process by which fructose is absorbed into the blood through the mucosa cells of the intestine.$\newline$Let's analyze the options:$\newline \bullet$Option 1: Active transport - This process requires energy in the form of ATP to move substances against their concentration gradient. Fructose absorption does not involve active transport.$\newline \bullet$Option 2: Facilitated transport - This process involves the movement of substances across cell membranes through protein channels or carriers, without the use of energy. Fructose is absorbed by facilitated diffusion using a specific transporter protein.$\newline \bullet$Option 3: Simple diffusion - This process involves the movement of substances from an area of higher concentration to an area of lower concentration without the use of energy or transport proteins. Fructose absorption is not through simple diffusion.$\newline \bullet$Option 4: Co-transport mechanism - This process involves the simultaneous transport of two substances across a membrane. Fructose absorption does not involve co-transport.$\newline$Based on the analysis, the correct option is Option 2: Facilitated transport.$\newline$Fructose is absorbed into the blood through the mucosa cells of the intestine by facilitated transport.$\newline$Therefore, the correct answer is Option 2.