It is relatively easy to spot a gerund, given that it looks like a verb + ing. Having that in mind, the gerund here is drinking from the tap. This gerund acts as the subject of the sentence, which you can easily determine by asking the question What is perfectly safe?, and the answer will be Drinking from the tap - that's how you know it is the subject.
So, the correct answer is drinking from the tap/subject.
An Dexter falls in love with Judy because she is beautiful and confident, making herself seem desirable. Why was it difficult for Emily to meet suitable men in her youth? Her father never approved of any of them. He was gay so he was never going to marry her.
It defines culture and surroundings and environment
The correct option is D.
Ration refers to a fixed amount of a particular commodity which is officially allowed during a time of shortage such as the one experience during war time. A similar word that can be used instead of ration is portion.
