The following sentence has been divided into parts. One of them contains an error. Select the part that contains the error from the given options.
He was / late / for school / and punished.

The correct option that contains the error is "and punished".

Let us analyze the sentence step-by-step to understand the grammatical error:
The sentence is structured as: "He was / late / for school / and punished."
This sentence has two coordinate clauses connected by the coordinating conjunction "and":
1. "He was late for school"
2. "[He was] punished"
In the first clause, "was" is used as a linking verb (copula) followed by the adjective "late" acting as the subject complement.

In the second clause, we want to express that he received a punishment from someone else (which requires the passive voice). The passive voice construction requires an auxiliary verb "to be" followed by the past participle of the main verb ("was punished").

While the subject "He" can be shared (omitted in the second clause through ellipsis), we cannot ellipt the auxiliary verb "was" because its grammatical function in the first clause is a linking verb, not an auxiliary passive verb. Elliding the verb "was" in the second part results in an ungrammatical shift or makes it sound as if "He" did the action of punishing (active voice), which is not the intended meaning. To make the sentence grammatically correct and maintain parallel structure, the auxiliary passive verb "was" must be explicitly written before "punished".

Therefore, the corrected sentence should be:
"He was late for school and was punished."