Answer only #4,5,6thank you please

4. the sun: generates life, the all pervasive knowledge generates a deep understanding of the meaning and importance of life envisioning ‘That Thou Art’.

5. the leaves: is undoubtedly the catalyst of Peace. It denotes the vitality of co-existence wherein the virtues of tolerance, respect and brotherhood are imbibed and practiced.

Explanation:

"the idea of humanism is mostly adeptly reflected in renaissance art by a focus on the body itself, especially with sculpture, where many detailed portraits of the human body (such as the david) were created."