Final answer:
Malawi is the landlocked country bordered by Mozambique, Zambia, and Tanzania, which is the correct answer among the options given.
Step-by-step explanation:
The landlocked country bordered by Mozambique, Zambia, and Tanzania is Malawi. This southeastern African nation is one of the smaller landlocked states in the region, unlike its larger neighbors like South Africa, Botswana, and Zimbabwe, all of which have significant mineral deposits.
When considering the options provided, namely Zimbabwe, Malawi, Botswana, and Swaziland, we can confirm that Malawi is indeed the correct answer as it fits the criteria of being bordered by the aforementioned countries.