Question

by 1500, renaissance ideas were mainly being spread across europe through
speeches.
books.
recordings.
politicians.

Explanation:

During the Renaissance, the printing press (invented around the 15th century) enabled the mass production of books. This made it easier to spread Renaissance ideas (like humanism, art, and new learning) across Europe. Speeches were limited in reach, recordings didn't exist then, and politicians weren't the main spreaders of these cultural/intellectual ideas. So books were the primary medium.

Answer:

B. books.