Answer:
a.
an informal definition
Explanation:
The definition used about corns is an informal one because the author did not make use of any kind of statistic to show that corns are vulnerable to certain kinds of worms and also did not mention the names of worms the corn is vulnerable to.
When something is said to be informal, it means it is not yet official.
Vas happenin!!
Hope your day is good
Takes is grammatically correct
Hope this helps you out
*smiles*
-Zayn Malik
