Believe it or not, this sentence is simple.
Yes, it is quite long, but it has one subject (daylilies) and one verb (are). As a result there is one independent clause.
This single independent clause has some adverb and adjective phrases, but the sentence is still a simple one.
<span>struggling to survive through seemingly insurmountable odds.</span>
The answer is D. Neither is misspelled as niether with an ie when it is supposed to be and ei.
The answer is between Either A or D