Step 1: Wax formation is the most common issue in offshore pipelines as it precipitates when the temperature drops below the wax appearance point.
Step 2: Char is a product of incomplete combustion, while hydrates form in the presence of water and gas, but it is not typically associated with pipeline blockages.
Step 3: Asphaltenes can precipitate, but they do not usually cause pipeline blockages.
Thus, the correct answer is (A) Wax.
Figure shows an inextensible catenary mooring cable in still water. The submerged weight (per meter length), and the anchor radius are 100 kg/m and 50 m, respectively. If horizontal tension ($T_h$) in the catenary is 1600 kg, the catenary length (AB) is ............. m (rounded to two decimal places). 
Identify the option that has the most appropriate sequence such that a coherent paragraph is formed:
Statement:
P. At once, without thinking much, people rushed towards the city in hordes with the sole aim of grabbing as much gold as they could.
Q. However, little did they realize about the impending hardships they would have to face on their way to the city: miles of mud, unfriendly forests, hungry beasts, and inimical local lords—all of which would reduce their chances of getting gold to almost zero.
R. All of them thought that easily they could lay their hands on gold and become wealthy overnight.
S. About a hundred years ago, the news that gold had been discovered in Kolar spread like wildfire and the whole State was in raptures.
Fish : Shoal :: Lion : _________
Select the correct option to complete the analogy.