The correct answer is option d.
Step-by-step explanation:
Given fraction = ![\frac{18}{30}](/tpl/images/0451/1834/f190e.png)
To find = Lowest form of given fraction.
Solution :
The lowest form of the fraction is written by reducing the fraction to the lowest value where it cannot be divided further.
![\frac{18}{30}=\frac{9}{15}](/tpl/images/0451/1834/163d3.png)
(dividing numerator and denominator it by 2)
![\frac{9}{15}=\frac{3}{5}](/tpl/images/0451/1834/67fc9.png)
(dividing numerator and denominator it by 3)
![\frac{18}{30}=\frac{3}{5}](/tpl/images/0451/1834/45ffb.png)
Hence,the correct answer is option d.