Final answer:
The correct combination of sentences 4 and 5 is option D: The statues were very similar to one another, each with a large nose and long ears; however, they were not identical.
Step-by-step explanation:
The combination of sentences 4 and 5 that is correctly punctuated is option D. The correct option is:
The statues were very similar to one another, each with a large nose and long ears; however, they were not identical.
This option uses a semicolon to separate the clauses and the word 'however' to show the contrast between the statues being similar but not identical.