Which of the following is a challenge associated with the dominant urban planning paradigm of the past 60 years, as highlighted in freedman?

a. it supports the ability of landscapes to provide key ecological services such as clean water.
b. it poses a threat to natural habitats and fertile farmland. it reverses the decay of neighborhood life.
c. it leads to creation of efficient transportation system and use of energy and materials.
d. it promotes compact development with mixed land-uses and economic activities located in one space.