A、The waste problem in Bamako. B、The disappearance of donkey carts. C、The population boom in Bamako. D、The poor workers in Bamak

In the Malian capital of Bamako, donkey carts driven by young men like 19-year-old Arouna Diabate play a vital role battling the fast-growing city’s waste problem.
Every morning before dawn, Diabate hitches his donkey to a cart and sets off on his rounds, going door-to-door to collect household garbage which he delivers to a local waste transfer station for a monthly salary of around $35.
Mali is one of the poorest countries in the world and the authorities struggle to provide adequate public services in the capital. Bamako’s population more than quadrupled from the mid-1970s to 1.8 million as of 2009.
The population boom has made the issue of waste disposal in Bamako more acute, requiring Diabate’s boss, Moustapha Diarra, to deploy eight donkey carts in his district instead of the two he managed a decade ago.
The system is overburdened due to a proliferation of informal dumps and the authorities’ failure to remove waste from the local transfer stations, Diarra said.
Questions 1 and 2 are based on the news report you have just heard.
1. What is the news report mainly about?
2. What did Moustapha Diarra do to solve the acute issue of waste disposal?