Answer:
In order to convince the developers proper petitions and incentives must be used.
Step-by-step explanation:
The developers at the time of construction must be willing to applying eco-friendly designs and substances, and this can help in saving the environment for a longer time. Thus, in order to convince the developers, proper petitions and incentives must be applied.
If there would be no use of petition, then the developers may not use the eco-friendly substances at the time of construction, thus implementing petition would be an ideal step for the developers to use eco-friendly materials and designs.