saikarthikreddy wrote:
The subject phrase here must be singular Managing your irrigation system well and watering your grass wisely ,but none of the option take it to be singular .The option D which is wrong takes it to be plural .
The key to identify a subject phrase as singular or plural based on how the individual nouns/items in the phrase are connected with rest of the sentence.
1) If separating them makes sense, then they have to be considered two different nouns and hence verb goes into plural
2) If separating them does not make sense, then the verb has to be singular
For e.g,.
--> My mentor and role model is my mother. (I am talking about my mother, but not mentor and role model. Logically I can say my mentor is my mother and my role model is my mother, but does it sound right? To emphasize a fact probably you can say my mentor is my mother and my role model
also is my mother)
--> Burger and coke is my all time favorite lunch (burger and coke are independently two different items; but what i am talking about is the lunch not those individual items)
Coming to the question, we can separate those statements and they both are independently valid statements and hence we need to use plural verb.
D is the right answer