Our main agricultural___to export world wide are rice,coffee and rubber A.products                  B.produce              C.production              D. productivity

The correct answer is A. products.

In this sentence, the word "products" is used to refer specifically to items that can be exported. Rice, coffee, and rubber are all tangible goods that are manufactured or harvested and can be sold in the global market.

Let's analyze the other options:

B. produce: This term typically refers to fresh fruits and vegetables and is not the best fit in this context since it is not used to describe all agricultural goods collectively.

C. production: This term refers to the process of creating goods or the total amount produced but does not fit in the context of listing what is being exported.

D. productivity: This word refers to the efficiency of production or how much output is generated per unit of input. It does not indicate the specific goods being exported.

Thus, "products" is the most appropriate choice as it correctly identifies the specific agricultural goods being exported worldwide.