Answer:
Largest grammatical unit
Step-by-step explanation:
A sentence should always contain a subject (Except for imperatives) and predicate; a proper written sentence should starts with a capital letter and ends with a full stop. For instance the word (Celebrities ) starts with a capital letter which connotes the beginning of a statement, and the sentence also ends with a full stop (.) but there are many other ways to end a statement by using question mark (?) or an exclamation mark(!)