Select the option that groups rocks of two different kinds as shown in the box.
Conglomerate :: Obsidian

Options

A. Slate :: Sandstone
B. Gneiss :: Shale
C. Limestone :: Granite
D. Slate :: Pumice

Explanation

To solve the question, we need to identify rocks that are categorized similarly to the given pair: Conglomerate and Obsidian.

### Step-by-Step Solution:

1. **Identify the Types of Rocks**:
- Conglomerate is a **sedimentary rock**.
- Obsidian is an **igneous rock**.

2. **Look for a Pair of Rocks**:
- We need to find another pair of rocks where the first rock is sedimentary and the second rock is igneous.

3. **Evaluate the Options**:
- Check the options provided for pairs of rocks.
- Identify which option has a sedimentary rock followed by an igneous rock.

4. **Identify the Correct Pair**:
- If one of the options includes **Limestone (sedimentary)** and **Granite (igneous)**, that would be the correct answer.
- Other options like Sandstone and Slate (both sedimentary), or Shale and Gneiss (both metamorphic) do not fit the criteria.

5. **Conclusion**:
- The correct option is the one that pairs a sedimentary rock with an igneous rock, specifically **Limestone and Granite**.

### Final Answer:
The option that groups rocks of two different kinds as shown in the box is **Limestone (sedimentary) :: Granite (igneous)**.

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