The sentence is meant to compare the temperature in Ethiopia to the temperature in other countries.

Option A - Incorrect
The use of the 'which' clause makes it seem as if it is comparing the degree of the temperature, not the temperature itself.

Option B - Incorrect
This answer choice misses the preposition 'in', thereby, making the sentence appearing weird.

Option C - Incorrect
Using the conjunction 'and' (which is a parallelism indicator) but there is no contraction to be made parallel in the given sentence.

Option D - Correct
The addition of the pronoun 'that' in the sentence gives a logical explanation that temperature in Ethiopia and temperature in other countries are being compared.

Option E - Incorrect
This answer choice compares the temperature in Ethiopia to the other countries, instead of comparing it to the temperature of other countries.