Ravi wants to plot a number $x$ on the number line such that $x$ is rational, lies between $\sqrt{2}$ and $\sqrt{3}$, and has a terminating decimal. Which choice works?

$\sqrt{2}$ about 1.414 and $\sqrt{3}$ about 1.732, so $x$ must lie in (1.414, 1.732). Among the options, 1.5 lies in this range and terminates. 1.4 is below $\sqrt{2}$; 1.8 is above $\sqrt{3}$; and 1.41421 is less than $\sqrt{2}=1.4142135$..., so it is just below the range.