Find the smallest integer whose cube is equal to itself.

Correct option is C

Solution:
Option(a)
 $$(1)^3 = 1$$​
Option(b)
​$$(0)^3 = 1$$​​
Option(c)
​$$(-1)^3 = -1$$​​
Option(c)
​$$(2)^3 = 8$$​​
According to above
-1 is smallest integer whose cube is equal to itself.