The longest word in the english dictionary is the famous disease casued by the inhalation of volcanic ashes, silica, etc.:
Pneumonoultramicroscopicsilicovolcanoconiosis
And the longest word in any language, doesn't belong to any specific language, because it's a scientific name. This is the scientific name of titin. This word, has amazingly 189,819 letters.
Hope it helped,
BioTeacher101
The word are is a Linking Verb
The answer is C. no author was listed.
Regardless of whether the author is credible or important, you always have to give credit where it's due