Answer:
is a clause in which the subject is omitted
Explanation:
Answer:
Even though recycled water is accepted for uses like irrigation, recycling toilet water to tap water may make people feel reluctant and disgusted about the idea of drinking it.
Besides, the phrase "toilet to tap" may reduce the strength of the advantages of recycling water. The reason is people may make prejudices based on their feelings about the dangers of drinking recycled toilet water.
The singular noun in this sentence would be the word "Sand" because it's talking about the "Hot sand".
He walked across the hot "sand", hot is used to describe the word sand.
Thus your answer.... B. sand.
Hope this helps. :)