PLEASE HURRY!! Which evidence best supports the following topic sentence:

In addition, our city should start a bike-sharing program in order to promote healthy and active lifestyles.

A. A bike-sharing program would enable all city residents to participate and enjoy a popular outdoor activity.

B. Medical research has repeatedly shown that just 20 minutes of activity five days a week significantly improve heart health

C. Many riders are not interested in fast biking but just enjoy the feeling of gliding along, enjoying nature.

D. In addition to bicycling, running, and swimming are also activities that build fitness to help strengthen the heart and lungs

Mangrove have two types of specialized root systems t f

Identify the trade regulation concept described in each scenario. protectionism free trade trade war country a and country b want to develop their respective export markets. both countries have highly developed agricultural, industrial, and service sectors. the countries decide to initially lower trade barriers and eventually remove them completely. arrowright country a has an agrarian economy with an emerging industrial sector. to allow domestic industries to grow, country a applies quotas on all industrial products except those that are used as resources. arrowright country a passes an economic policy that will indirectly give its own companies an advantage over country b’s companies. country b alleges that the policy violates the countries’ trade agreement and imposes retaliatory tariffs. arrowright

What is the main idea of this paragraph? asap