I didn't read the text that goes along with this but based on the information, I would say the answer is D. I hope this helps!
Answer:
Based on this statement, the author is suggesting that sunflowers that are planted in the desert will fail to survive in the hot conditions.
<span>The word partly shouldn't be divided by a hyphen because C. a two-letter word ending should not be carried over to the next line. A is incorrect because partly has two syllables, and not one. B is incorrect because partly is an adverb, it is neither a proper noun (those are names), or an adjective. D is incorrect because the syllables in the word partly do not have one letter: part has four letters and ly has two letters. </span>
<em>Alliteration </em>is the occurrence of the same letter or sound of adjacent words.
For example, "The nightlife in Nigeria is not very known."