Which of the following is the algebraic expression that best describe the sequence?

Algebraic expression: It is an expression which is frame from the variables (x,y etc.), integer constants and algebraic operations (+,- , multiplication and division etc.).
Sequence is defined as the structured list of numbers.
Now, according to the given sequence, first place is [tex]\frac{1}{7}[/tex], second is [tex]\frac{2}{7}[/tex], third is [tex]\frac{3}{7}[/tex], fourth is [tex]\frac{4}{7}[/tex]. Thus, [tex]x^{th}[/tex] place of the sequence should be determined.
The [tex]x^{th}[/tex] place of the sequence is [tex]\frac{x}{7}[/tex]. Therefore, option (A) is correct.