Some boys in the class are taller than all the girls.
Our domain is $\textbf{set of boys & girls in the whole class.}$
We rewrite like this:
$\text{There exists some x such that x is boy}\; \color{Red}\text{and}$ $\text{for all y, if y is girl, then x is taller than y}$
logically we can write: $\color{DarkRed}(\exists x) \text{(boy(x)} \wedge (\forall y)(\text{girl(y) → taller(x,y))})$
$\color{DarkGreen}\text{Ans: D}$