Answer:
The most significant result is the improvement of techniques for the preservation and extraction of artifacts, documents and other archeological elements.
Explanation:
The technological revolution allows for the development of more optimized, efficient and specific equipment and techniques that when used in archeology, in addition to improving the work of archaeologists, allows archeological elements such as artifacts and documents to be better extracted, managed and preserved, which allows that the archaeological researches are done with more precision, optimization, control and efficiency.
A - Not a knocker but Marley's face
This shows that the knocker transformed to the supernatural by becoming not what it was - but the face of his dead co-worker.
We had hoped they had sent us an invitation too.
Answer:
A
Explanation
Seems the most reasonable answer to me, hope this helps :)