The question asks which statement can be inferred from the passage. Let's test each option against what the passage actually states.
The clearest, most directly textually supported inference is about the safety of the water itself, since the passage explicitly states it is sold without testing or treatment.
Therefore, the correct answer is the water supplied by the water tanker mafia is potentially contaminated.
The question asks which listed word or phrase signals that the illegal supply of groundwater has been going on for a long time, rather than being something new. Let's look at each option on its own merits.
Only one option carries a built-in sense of time: a practice that is entrenched is one that has taken root and stayed in place over years. The other three options describe spread, a goal, or a shrinking resource, none of which speaks to duration.
Therefore, the correct answer is Entrenched.
The question asks for the author's main concern in the passage. Let's weigh each statement against what a piece exposing an illegal water tanker trade would typically be arguing.
Once the second option is set aside as inaccurate, "all the above" cannot stand either. Between the remaining two, the profiteering-versus-sustainability point is the broader, more central claim, while the infrastructure gap is a supporting detail underneath it.
Therefore, the correct answer is the petty profiteering of a few actors comes at the immense cost of India's sustainable access to water.
The question asks which of the four words is not one of the sounds heard while the water tankers are being filled. Let's look at what each word actually describes.
Creaking, thrumming, and droning all describe sounds coming from the mechanical parts, the pump, the pipes, the tanker's frame, straining and running as the tanker is loaded. Gushing describes the water's own movement, not a sound produced by the loading apparatus, so it stands apart from the group.
Therefore, the correct answer is Gushing.
The question asks which word from the passage means 'hidden'. Let's check the meaning of each option against that one target sense.
Illicit is about being unlawful, idling is about being inactive, and subversive is about undermining something, none of these give the sense of being out of view. Covert is the only word whose core meaning is concealment.
Therefore, the correct answer is Covert.