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

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.

Mrs. Stevens, along $\frac{with}{\left(A\right)}$ $\frac{hercou\sin sfrom}{\left(B\right)}$ New Mexixo. $\frac{are}{\left(C\right)}$ planning $\frac{to\ attend}{\left(D\right)}$ the festivities.

Identify the underlined word or phrase (A, B, C, or D) that must be changed in order for the sentence to be correct (11-15)

The $\frac{equipment}{\left(A\right)}$ $\frac{in\ the\ office}{\left(B\right)}$ $\frac{was\ badly}{\left(C\right)}$ in need of $\frac{toberepaired}{\left(D\right)}$.