Final answer:
The type of proposition represented by (D) is a compound proposition.
Step-by-step explanation:
The type of proposition represented by (D) is a compound proposition. A compound proposition is a proposition that is formed by connecting two or more simpler propositions using logical operators, such as 'and,' 'or,' or 'if-then.'
For example, if we have the statements 'It is raining' and 'I am indoors,' the compound proposition 'It is raining and I am indoors' represents a conjunction of two simpler propositions.