Read the passage and answer the questions.
In the relentless expansion of urban environments, the provision of public playgrounds often recedes into a peripheral concern, overshadowed by commercial imperatives and infrastructural demands. Yet, their significance transcends mere recreational utility. Playgrounds constitute critical arenas for cognitive, social, and physical development in children, fostering resilience, creativity, and communal identity. Despite the mounting corpus of research affirming these benefits, municipal authorities frequently exhibit a myopic focus on economic expediency, relegating green and play spaces to marginal status.

The consequences of this oversight are profound. A deficit of accessible, safe play areas not only exacerbates sedentary behaviours among youth-contributing to escalating public health crises such as obesity and anxiety-but also erodes the social cohesion that vibrant urban communities depend upon. Playgrounds, when thoughtfully integrated into cityscapes, act as vital intergenerational nexuses, bridging demographic divides and cultivating a sense of belonging that sterile commercial zones cannot replicate.

To rectify this imbalance, urban planners must adopt a paradigm that recognizes play as an essential urban function, not a dispensable luxury. Design strategies should prioritize inclusivity, sustainability, and aesthetic integration with the built environment. Only through intentional, visionary planning can cities nurture both their youngest residents and the communal fabric upon which their long-term vitality depends.

What does "rectify" most likely mean in the sentence: "To rectify this imbalance, urban planners must..."?