The aging process causes complex physical changes that affect all body systems

What famous water cure advocate became the foremost authority on water-based therapies with his book, My Water Cure, published in 1889?

A) Sebastian Kneipp B) Pehr Ling C) Sir John Floyer D) Alain-Yvan Belanger

The primary diagnosis is the main reason for the visit or encounter

Indicate whether this statement is true or false.