Which number can be inserted in the parentheses so the numbers are ordered from least to greatest? negative 3, left-parenthesis space right-parenthesis, negative 1 and one-eighth A. negative 3 and one-half B. 0 C. negative 2 and one-fourth D. one and one-half

we have that
negative 3, left-parenthesis space right-parenthesis, negative 1 and one-eighth 
[-3,(  ),-1,1/8]

we know that
the number to insert must be between -3 and -1------> (-3,-1)

A. negative 3 and one-half -------> is not in the interval (-3,-1)
B. 0 -------> is not in the interval (-3,-1)
C. negative 2 and one-fourth ----> -2 1/4 belong to the interval (-3,-1) 
D. one and one-half  -------> is not in the interval (-3,-1)


therefore 
the answer is the option
C. negative 2 and one-fourth