The value of x in the following table is

25
32
17
28

The correct answer is (a) 25.

The table shows the number of people in each age group who have been vaccinated against COVID-19. The total number of people who have been vaccinated is 100. The number of people in the 18-29 age group who have been vaccinated is 25. Therefore, the value of x in the table is 25.

Option (b), 32, is incorrect because the number of people in the 30-39 age group who have been vaccinated is 32. Option (c), 17, is incorrect because the number of people in the 40-49 age group who have been vaccinated is 17. Option (d), 28, is incorrect because the number of people in the 50-59 age group who have been vaccinated is 28.