Answer:
B). The sky is cloudy, but it isn’t raining.
D). I will go to a movie this afternoon, or I will go to the park.
E). In five minutes, dinner will be ready;
Step-by-step explanation:
Compound sentences are exemplified as sentences containing minimum two or more independent clauses linked with either a semicolon(;) or comma(,) or coordinating conjunction. As per the question, the sentences that exemplify a compound sentence are options B, D, and E.
In option B, the two independent clauses 'the sky is cloudy' and 'it isn’t raining' are joined by a comma(,).
In option D, the two independent clauses 'I will go to a movie this afternoon' and 'I will go to the park' are linked by a coordinate conjunction 'or'.
In option E, the two independent clauses 'In five minutes, dinner will be ready' and 'I hope everyone is hungry' are connected with a semicolon(;).
Thus, these three are justified as compound sentences.