Instructions: select all the correct answers. in what three ways did the chinese develop the perpetual calendar wan-nien-li? 1.they observed the sun's longitude and the moon's phases. 2.they used measurements from a sundial and a water clock. 3.they determined the dates of the two solstices in a year. 4.they mapped the constellations in the night sky. 5.they surveyed citizens about how many days there should be in a year.

it shoule be 2 as i have asnswerd thid befote and it was right

sun's longitude and moon phases

Sundial and water clock

Two Solstices in a year

Explanation:

100%

answer; /// i believe that the correct answer is (a) making presentations;

both focus ón people who behave in a risky way and çause accídeñ both explaín how to púrchase insurance añd cover the costs of premium. both describe what happened when consumers fail to pay their premíums in time