In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank. Comprehension:
With the groundwater table receding alarmingly, an ostrich mentality will only increase water woes. Deficit rainfall (1) ______ indiscriminate extraction of ground water (2) ______ two major reasons for (3) ______ situation. Government must promote (4) ______ harvesting and conservation. Citizens must (5) ______ learn to use water judiciously or else the State will run out of water like Cape Town.
Select the most appropriate option to fill in blank No.4.
Identify the most appropriate option to substitute the underlined segment. If no substitution is required, select No substitution. The shoebill stork can be recognise from its long legs and broad wings.