Question

Which sentence best demonstrates the language required of an argumentative speech?
To improve their games, chess players must face skilled opponents and attempt novel strategies.
Chess players often study the strategies and famous matches of well-respected chess masters.
Chess players often make the mistake of playing their peers and less-skilled opponents just for fun.
The only way for chess players to get any better is by learning from the pros and testing out risky moves.

Answer 1

"To improve their games, chess players must face skilled opponents and attempt novel strategies."

Reason: It takes a clear, debatable position with strong, persuasive wording ("must") and gives reasons — the kind of assertive claim and support typical of argumentative speech.