Figurative language goes beyond the literal meanings of words to create special effects or feelings<span>. It is a </span>word<span> or phrase that is not meant to be taken literally but figuratively.</span>
Since this drawing is his way of reminding her that she and their garden are "as safe as a missel thrush", it makes her one of the many creatures whose secrets he keeps faithfully. So, having that in mind, I would say the correct answer is A) his trustworthiness.
They are antonyms. Assorted means consisting of a certain kind in a certain order while miscellaneous is synonymous with random.
The answer to your question would either be b or c.