Need plz me
which sentence is not correctly punctuated?
a.
carol is a musician; her brother is an artist.
b.
the play's plot was realistic but the dialogue was hard to follow.
c.
i bought a model airplane kit yesterday, but i can't start on it until tomorrow.
d.
it's starting to rain; i think i'll close the windows.

Read the poem from "my brothers’ flying machine: orville, wilbur, and me" by jane yolen first before answering these questions. part a: how do lines 1–23 most support a theme of the poem? question 1 options: a by describing how heavy the constructed plane would be b by detailing the commitment that went into the first flight c by showing how tunnels were used to make test flights d by illustrating the challenges of fueling the plane read the poem from "my brothers’ flying machine: orville, wilbur, and me" by jane yolen first before answering these questions. part b which evidence from the poem best supports the answer to part a (question 1)? question 2 options: a “now they worked dawn to dusk / so absorbed in what they were doing,” (lines 1–2) b “they learned about lift and drag.” (line 9) c “gasoline was gravity-fed into the engine” (line 19) d “over six hundred pounds of aeroplane— / it could not be assembled whole in our shop.” (lines 22–23)