Question

which feature is most commonly found in argumentative texts but not in expository texts? presentation of both sides of an issue with a clear stance neutral tone throughout use of statistics and facts explanation of a process

Explanation:

Argumentative texts aim to persuade by presenting both sides and taking a stance. Expository texts are for explaining or informing without taking a side. A neutral tone and use of statistics/facts can be in both, and process - explanation is typical for expository.

Answer:

Presentation of both sides of an issue with a clear stance