The root word for unmistakable is mistake
Glazing pottery can be tricky <u>but</u>, the stunning results make the effort worthwhile.
After all went dark, the walls opened to reveal glass all around.
Answer:
Someone who destroys or damages someone else's property.
Explanation:
When you're unsure about what a word means, you can look it up in a dictionary. A dictionary is an alphabetically arranged listing of words that contains different information about them, such as their definitions, examples, origin, pronunciation, etc.
A saboteur is someone who performs sabotage, i.e. someone who destroys or damages something deliberately. This often involves the destruction of someone else's property.
This is why the second option is the correct one.