Misc: Who ate watercress to dissolve gravel and stones in the bladder?

Questions

In 1872 Roald Amundsen, Norwegian explorer, discoverer of ---------- born?

In 1888 ---------- Zernike, inventor of phase-contrast microscope (Nobel 1953) ?

In 1888 Frits---------- , inventor of phase-contrast microscope (Nobel 1953) ?

In 1888 Frits Zernike, inventor of phase----------- microscope (Nobel 1953) ?

In 1888 Frits Zernike, inventor of phase-contrast ---------- (Nobel 1953) ?