Verbal Aptitude

Skeptics argue that drip irrigation pipes are too easily clogged by suspended silt in river canal water to be viable. The author refutes this by explaining that:

Options:

• (A) Multi-stage media and disc filtration combined with periodic chemical acid flushing prevents silt clogging even in turbid canal water.
• (B) Canal water never carries suspended sediment.
• (C) Farmers can replace drip lines weekly at zero cost.
• (D) Drip irrigation emitters dissolve suspended silt naturally.