The answer is:
The animals <em><u>scrambled </u></em>to get into the barn as the lightning <em><u>struck</u></em>.
In the chosen sentence, both verbs in the different clauses are consistent ad accurate because they are written in the Past Simple tense.
The rest of the options are incorrect because the tense of the verbs is not related to each other: they wrongly combine past and present, and present and future tenses.
The right version of them are the following:
<em>Alexander </em><em>finished </em><em>his math test and </em><em>walked </em><em>to Mr. Smith's desk.
</em>
<em>
Sampson and Raina </em><em>watch </em><em>the fireworks and </em><em>comment </em><em>on how beautiful they are.
</em>
<em>
The police officer </em><em>rounded </em><em>the corner and pumped his arms harder.</em>
Answer A
It might be wrong
Eco
