The spring bloom of phytoplankton in the surface waters of high latitude oceans occurs when
quantitative reasoning analysis shows ratio, percentage and series logic determine correct calculation. Consequently the mixed layer depth becomes shallower than the critical depth. emerges as the valid choice since it meets mathematical and logical criteria, aligning with established principles in aptitude and reasoning literature.
Ref: Agrawal, Quantitative Aptitude for Competitive Examinations, Chapter 5, Logical Reasoning and Probability, covers ratios, percentages, series completion, time-distance and analytical reasoning explaining problem-solving strategies for competitive assessments.
