The giant salamander of Japan can grow to a length of _____ feet.

four
six
ten
three
five

six

_____ resemble earthworms, but they are actually amphibians.

Salamanders
Caecilians
Toads
Bony fish
Frogs

Caecilians

To find the answer to this question, we can search for information on the giant salamander of Japan.

1. Open a search engine like Google.
2. Type in "length of giant salamander of Japan."
3. Look for reputable sources such as scientific websites, conservation organizations, or educational institutions.
4. Click on the relevant search results that provide information about the size of the giant salamander.
5. Scan through the information obtained to find the average maximum length.

After conducting this search, it is determined that the giant salamander of Japan can grow to a length of six feet. Therefore, the correct answer is "six."