This should be B, it is a compound-complex sentence.
The answer is A: descriptive phrases full of images from nature
When utilizing words within a sentence, we must first recognize two things: their definition and the ways that they can be used. As such, when we have these elements, we can generate sentences that not only use them correctly, but through these sentences we can further understand the meaning of the words through context. Defy, as per the dictionary, means to disobey an order, or challenge someone or something and unequal means not being able, or not having the resources, to deal with someone or a situation, or also, a variation in size, shape or other characteristics that make two things differ and one be superior to the other.
As such, a good sentence to combine these two words could be thus: We have always been unequal to the task of dealing with corrupt people because we fear to defy those who we perceive have power and control over us.
