The answer is D. <em>While </em>and <em>however</em>.
A doesn't work because "both" is a word of comparison, B isn't right because "also" is a transitional word and has nothing to do with contrasting the two animals, and C is incorrect because "similar" isn't a word of contrast; instead, it's a word you use when you compare two things.
Hope this helps!
Answer:
A. The receding waves left a dark mark upon the golden sand.
Explanation:
A participle is the verb form of a word that can serve as an adjective in a sentence or used to create the verb tense. In the chosen option above, the verb recede is used as a present participle because it is in the -ing form. It serves as an adjective because it describes the waves.
Participles of verbs can also exist in the past and -s form. In that case, recede is used as receded and recedes respectively.
It connects by drinking more beer to satisfy my thrist . Thank you very much for your points!