Seismograph: Showed that earthquakes are not signs of heaven's anger but..
Water Clock: Helped measure time accurately without the sun
Sundial: Helped measure time with the aid of the sun
Perpetual Calendar: Tracked days, weeks, and months across a year
Paper: Replaced heavy writing surfaces such as stone or shell and allowed for the printing of Buddhist's prayers
John Locke is the author of this quote.
❅<span><span>D. As a symbol of loyalty, nobles were given the choice of either military service or paying fee.
The option D did not occur during the reign of Henry I.
All other options happened during the time. </span></span>