Question

one of galileos contributions to science was creating the coordinate plane system. developing the scientific method. improving the telescope. inventing the astrolabe.

Explanation:

• The coordinate plane system was created by René Descartes, so the first option is incorrect.
• The scientific method was developed over time by multiple thinkers, not solely Galileo, so the second option is incorrect.
• Galileo is known for improving the telescope, which allowed him to make important astronomical observations.
• The astrolabe was invented long before Galileo's time, so the fourth option is incorrect.

Answer:

C. improving the telescope.