Only full-length words should appear in a dictionary.
agree
disagree

False

Explanation:

It is false that only full-length words appear in a dictionary. In fact, abbreviations are extremely common in dictionaries. These are very useful, as they allow the reader to gain more information about a word while not taking up a lot of space. For example, dictionaries often include abbreviations when they mention the part of speech of a particular word.

what are your options ?

i would say years or cherry blossoms

a. is the correct answer