Answer: Option 'D' is correct.
Step-by-step explanation:
Since we have given that
Percentage of students are freshmen = 44%
Percentage of students are sophomores = 25%
Percentage of students are juniors = 16%
Percentage of students are seniors = 15%
Of the freshmen, 35% have not declared a major.
So, Percent of the freshmen who have not declared a major is given by
[tex]\dfrac{44}{100}\times \dfrac{35}{100}\times 100\\\\=\dfrac{1540}{100}\\\\=15.4\%\\\\\approx 15\%[/tex]
Hence, Option 'D' is correct.