Think about how Romans actually wrote. They pressed letters into a wax coated board, and when the board was full they scraped the wax flat and used it again. "Tabula" is that board and "rasa" means scraped or erased, the same root that gives us erase and razor. A tabula rasa is therefore a board with nothing on it yet. English already has a ready made equivalent for that image.
The philosopher John Locke made the term famous by arguing that a newborn mind is a tabula rasa on which experience does all the writing. That usage still fits the same plain meaning: nothing recorded yet. Option (A) is therefore right.
Let's summarize:
So the correct option is (A), clean slate.
LIST I | LIST II (Meaning) | ||
| A | Break into | I | in search of |
| B | Cut down | II | wear |
| C | Look out for | III | enter by force |
| D | Put on | IV | reduce |