Answer:
Should not be silent or secretive but demonstrate it willingly
Some countries didn't have stuff that other countries had, so they used to trade to grow their community and for their people to survive. Trading was important to have all their goods they wanted.
A and C
<h2 /><h3>Life was more powerful than during the Warring States period and The silk road trading route increased trade</h3>
The important part here is "daily" - so we can ask, what else happens daily? the seasons, which are caused by the tilt of the earth and the Earth's rotation around the Sun, are on a yearly schedule rather than a daily schedule. What happens on a daily basis is one rotation of the Earth on its axis - and the correct answer is a)