Question

which is a feature of dialect?○ standard pronunciation and definitions○ informal language used in a specific location○ universal language not specific to one group○ formal language used to describe a certain topic

Explanation:

A dialect is a variety of a language associated with a particular group, often tied to a specific geographic location, and is typically informal in everyday use. Standard pronunciation/definitions refer to a language's standard form, not a dialect. A universal language not tied to a group is the opposite of a dialect's localized nature. Formal language for a specific topic describes jargon, not a dialect.

Answer:

informal language used in a specific location