Which of the following crops requires relatively wider line-to-line and plant-to-plant spacing?

The question asks which crop requires relatively wider line-to-line and plant-to-plant spacing. To understand this, we need to consider the growth characteristics and space requirements of each crop mentioned: 

• Maize: Typically requires moderate spacing due to its upright growth habit, allowing light penetration and air flow.
• Chickpea: As a legume, it generally requires closer plant spacing to maximize the yield per area.
• Cabbage: Requires moderate spacing, as the heads need room to form and the plants need air circulation to prevent diseases.
• Sugarcane: Known for needing wide plant spacing. This crop grows tall and dense with a robust root system, requiring significant space for optimal development and to facilitate intercultural operations such as weed control and soil tillage.

Given these characteristics, Sugarcane is the correct answer as it demands wider spacing compared to the other crops to accommodate its growth habit and intercultural activities.