I'm not sure but here's the definition of Parallel Structure. ( Using the same pattern of words to show that two or more ideas have the same level of importance). You can go with either the first or second sentence that's my opinion but I'm really not 100% sure. Sorry I couldn't been more helpful. I tried
Adjectives are words that are used to describe or modify nouns or pronouns. For example, red, quick, happy, and obnoxious are adjectives because they can describe things—a red hat, the quick rabbit, a happy duck, an obnoxious person.
I’m not sure for 1a) and 2a) sorry...
3a) Small, big
4a) Cute
5a) Especially
1b) Friendly, shy
2b) Nice
3b) Sweet, playful
4b) Frisky
5b) Happy
I think your answer is b.
Answer:
Irregular
Explanation:
You can think of "regular" as several neat rows or many similar things. They are all "regular" with each other and you can sort of predict what will come next.
There does not seem to be a specific pattern here, so we can conclude the answer most likely is irregular.