A to F below relate to the source and extraction of either Zinc or Aluminium.
A. Bauxite`" "`B. Coke
C. Cryolite`" "`D. Froth floatation
E. Sodium hydroxide solution F. Zine blende
Fill in the blanks using the most appropriate words from A to F.
The ore from which aluminium is extracted must first be treated with _____ so that pure aluminium oxide can be obtained.

Explanation

To solve the question, we need to identify the correct term from the options A to F that fits in the blank regarding the extraction of aluminum. The question states that the ore from which aluminum is extracted must first be treated with a specific substance to obtain pure aluminum oxide.

### Step-by-Step Solution:

1. **Identify the Ore of Aluminum**:
- The primary ore from which aluminum is extracted is **Bauxite** (Option A). Bauxite contains aluminum oxide along with impurities.

2. **Understand the Extraction Process**:
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