GIVEN sentence, the word "weren't" is indicating that the sentence is a negative sentence.Let us EXPLORE the given options:'Much' indicate the quantity or amount of a noun. We use 'much' only with uncountable NOUNS. In a negative sentence, “not much” means “little” or “a small amount of” an uncountable noun. The noun is in the singular form.'Little' is used with uncountable nouns means small in size, amount, or degree. 'Little' is considered as semi-negative because it gives almost negative meaning.'A little' is used with singular uncountable nouns means some but less amount. It has a positive connotation.'Many' indicate the quantity or amount of a noun. We use 'many' only with countable nouns. In a negative sentence, “not many” means “few” or “a small number of” a countable noun. The noun is in the plural form.In the given sentence, the plural noun 'people' is a countable noun. From the given options only 'many' is used with a countable noun.Hence, the correct option is 'many' Extra- Bites- Quantifiers are determiners that indicate how much or how little of the noun is being discussed. They INCLUDE WORDS such as all, few, many, much, little, a little etc. A determiner is a word that introduces a noun. It always comes before a noun, not after, and it also comes before any other adjectives used to describe the noun.There are four different types of determiners: articles, demonstratives, quantifiers, and possessives. Complete Sentence: There weren't many people there.