HELP ME PLZ AND FAST what are three ways light might behave when it strikes an object

A. travel straight through, curve around, bounce off

B. reflect, get brighter, refract

C. reflect, curve around, absorb

D. travel straight through, refract, reflect

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.