Answer: Linking words and phrases are used to show relationships between ideas. They can be used to join 2 or more sentences or clauses (a clause is a group of words which contains a subject and a verb). Linking words/phrases can be used to add ideas together, contrast them, or show the reason for something.
The answer is c, the wax was melted by the sun.
D. The coffee shop was unusual full, but today were many open tables.
A compound sentence is a sentence that has two complete sentences joined together using a comma and a conjunction. "The coffee shop was unusually full" is a complete sentence by itself. "Today [there] were many open tables" is also a complete sentence by itself. These are joined together with the conjunction "but" preceded by a comma.
