Answer:
When they finished eating, all of the boy's faces were covered in tomato sauce.
Step-by-step explanation:
A sentence can be defined as a group of words that comprises of both a subject and predicate used to convey a logical information. Sentences are classified into four (4) main categories and these includes;
I. Simple sentence.
II. Compound sentence.
III. Complex sentence.
IV. Compound-Complex sentence.
In this exercise, you're required to identify the sentence that contains a grammatical or spelling errors.
Although, none of the sentence contained a spelling error.
However, the second sentence contains a grammatical error because their isn't a subject-pronoun agreement.
A pronoun is one of the parts of speech in English language and it can be defined as a word that replaces a noun in a sentence. Some examples of a pronoun are he, she, you, I, who, it, them, ours, etc.
In English language, a subject can be defined as the person, thing, idea or place that performs an action.
A subject-pronoun agreement refers to the situation in which there is an agreement between a subject and a pronoun in terms of number.
This ultimately implies that, if a subject is singular, its pronoun should also be singular and if the subject is plural, the pronoun must be plural.
Further, a pronoun referring to the singular subject should also be in singular form, so as to connote an agreement of words (concord).
In this scenario, they (plural) was wrongly used for a singular object (boy) and as such, it connotes a grammatical error.