Red hot carbon will remove oxygen from the oxides `XO` and `Yo` but not from `ZO.Y` will remove oxygen from `XO`. Use this evidence to deduce the order of activity of the three metals `X,Y,` and `Z,` putting the most reactive first.

Options

A. `X,Y,Z`
B. `Z,Y,X`
C. `Y,X,Z`
D. `Z,X,Y`

Explanation

To determine the order of activity of the metals X, Y, and Z based on the given information, we can analyze the reactions involving red hot carbon and the oxides of these metals.

### Step-by-Step Solution:

1. **Understanding the Reaction with Carbon:**
- Red hot carbon can remove oxygen from the oxides XO and YO.
- This indicates that carbon is more reactive than both metals X and Y.

2. **Establishing Reactivity of Carbon:**
- Since carbon can remove oxygen from both XO and YO, we can conclude:
- Carbon > X (because carbon can displace X from XO)
- Carbon > Y (because carbon can displace Y from YO)

3. **Analyzing the Reaction with Z:**
- The problem states that carbon cannot remove oxygen from ZO.
- This means that Z is more reactive than carbon:
- Z > Carbon (because no reaction occurs when carbon is attempted to remove oxygen from ZO)

4. **Comparing Reactivity of X and Y:**
- The statement mentions that Y can remove oxygen from XO.
- This indicates that Y is more reactive than X:
- Y > X (because Y can displace X from XO)

5. **Summarizing the Reactivity Order:**
- From the above deductions, we have:
- Z > Carbon > Y > X
- Therefore, the order of reactivity from most reactive to least reactive is:
- Z > Y > X

### Final Order of Reactivity:
- **Most Reactive:** Z
- **Moderately Reactive:** Y
- **Least Reactive:** X