There are 7 days in a week. To determine the day of the week 100 days from now, calculate the remainder when 100 is divided by 7:\[100 \div 7 = 14 \text{ weeks} \text{ with a remainder of } 2\]This indicates that 100 days comprise 14 complete weeks plus 2 additional days. If the current day is Monday, then 2 days following Monday is Wednesday.Answer: Consequently, the day of the week after 100 days is Wednesday. Option (2) is therefore the correct selection.