To answer this question, you need to be familiar with idiomatic expressions and slang.
Option A) Cup of tea - This option is correct. In British English, "a cuppa" is a shortened form of "a cup of tea." Therefore, if someone offers you "a cuppa," they are offering you a cup of tea.
Option B) Slice of cake - This option is incorrect. While it is possible for someone to offer you a slice of cake, the phrase "a cuppa" specifically refers to a cup of tea.
Option C) A glass of wine - This option is incorrect. "A cuppa" does not refer to a glass of wine. It is specifically related to tea.
Option D) A sip of cold drinks - This option is incorrect. "A cuppa" does not refer to a sip of cold drinks. It is specifically related to tea.
The correct answer is A) Cup of tea. This option is correct because "a cuppa" is a slang term commonly used in British English to refer to a cup of tea.