The correct statement for Liam's task is:
Liam should compare the rates of change of the terms in both sequences. The growth rate of h(x)=1.2^x will quickly surpass the growth rate of j(x)=1.2x.
This statement correctly identifies that \( h(x) = 1.2^x \) is an exponential function and will grow much faster than \( j(x) = 1.2x \), which is a linear function. Exponential growth eventually surpasses linear growth as \( x \) increases.