Directions (9-13): In each of the following questions one sentence has been given. Each sentence has two blanks. From the options given below the sentence, pick the pair of words that fits into both the blanks respectively to make the sentence contextually meaningful and mark the letter corresponding to it as your answer.

Priceless ______________ of history remain ______________with the Titanic at the bottom of the Atlantic.

The correct answer is Option 1: pieces, buried.

To choose the correct pair of words, let us analyze the context of the sentence step-by-step:

1. First Blank: The sentence speaks about historical items associated with the Titanic located at the bottom of the Atlantic Ocean. The word "pieces" correctly collocates with "of history" to refer to historical items or relics (i.e., "pieces of history").

2. Second Blank: The phrase describes where these items are located relative to the shipwreck at the bottom of the ocean. The verb form "buried" appropriately describes historical artifacts or wreckage lying beneath/with the sunken ship ("remain buried with the Titanic").

3. Evaluating Other Options:
- artifacts, lie: "lie" is ungrammatical following "remain" in this context (it would need to be a participle like "lying").
- proofs, down: "proofs" does not fit the context naturally, and "down" is not a proper participle verb form here.
- surfaces, above: "surfaces" makes no sense, and "above" contradicts being at the "bottom of the Atlantic".

Therefore, the word pair pieces, buried completes the sentence meaningfully and grammatically: "Priceless pieces of history remain buried with the Titanic at the bottom of the Atlantic."