Which of the following countries are well known as the two largest cocoa producers in the world?

(a). Algeria and Morocco 

(b). Botswana and Namibia

(c). Côte d’Ivoire and Ghana

(d). Madagascar and Mozambique 

Explanation: 

Côte d'Ivoire and Ghana are the world's two largest cocoa producers, accounting for nearly 60% of the world's cocoa production:

Côte d'Ivoire: The world's largest producer of cocoa

Ghana: The second largest producer of cocoa, contributing to 25% of global cocoa production 

Together, these two West African nations are responsible for the majority of the world's cocoa supply.

Therefore, the correct answer is (c).