1. The problem asks to round the number 4.8 to the nearest whole number. 2. The rule for rounding to the nearest whole number is: if the decimal part is 0.5 or greater, round up; if it is less than 0.5, round down. 3. Here, the decimal part of 4.8 is 0.8, which is greater than 0.5. 4. Therefore, we round 4.8 up to the next whole number, which is 5. 5. Final answer: 4.8 rounded to the nearest whole number is $5$.