Question

An argument is
writing dealing with a controversial issue
writing that takes a specific perspective
writing that opposes another writer's opinions
writing to explain a writer's ideas on a topic​

Answer 1

Answer:

writing that opposes another writer's opinion

Explanation:

i want to say that its the first one (dealing with a controversial idea) but "dealing" wouldn't be the right word to use,  and a writing that opposes another writes opinion is correct but it doesn't always have to be another writer