Identify the incorrect one from the underlined sections.

A ray of light passing through the center of a thin lens keep its original direction.

Although both $\frac{of ~them}{\left(A\right)}$ $\frac{are\ trying}{\left(B\right)}$ $\frac{to\ get}{\left(C\right)}$ the scholarship, she has the $\frac{highest}{\left(D\right)}$ grades.

Identify the incorrect one from the underlined sections.

Weather is the transitory expression of climate that can change great from day to day or season to season.

The girls $\frac{were ~sorry}{\left(a\right)}$ to $\frac{had\ missed}{\left(b\right)}$ the singers $\frac{when}{\left(c\right)}$ they $\frac{arrived}{\left(d\right)}$ at the airport.