The correct answer is C. Let freedom ring from every hill.
An allusion is a figure of speech which refers to something from an external point of view. It is left to the reader to make a connection between the two things.
Martin Luther King, Jr., in his speeh "I Have a Dream" approches the audience's sence of nationalism to inspire them to achieve freedom and liberty.
A compound sentence is a sentence that has two independent clauses joined by a coordinating conjunction (and, nor, but, or), a conjunctive adverb (therefore, etc.) or a semicolon alone (;). For example: Mary is watching TV but Sam is playing thhe piano. John cooks great however Sara cooks even better.
