MY ANSWER IS "D".
Great!! Lavoisier was born in 26th August (1743)....yesterday!!
USING A RELIABLE BALANCE, LAVIOSIER REPORTED WEIGHT OF HIS REACTING SYSTEMs AND HE DEVINED THE "MASS CONSERVATION LAW". Chemists remembered him because by his several foreseing in actual Chemistry Dogma :
-) Chemistry can't break down chemical elements ;
-) Air is a mixture of Nitrogen and oxygen ;
-) Oxygen allows combustion and animal breathing ;
-) Oxygen combine with other chemical elements to form oxides or anhydrides ;
-) Oxides unite water to form Bases ;
-) Anhydrides unite to water to form Acids ;
-) Acids unite to Base to form Salt besides rescued water ;
-) Chemical Systems can't change its whole mass/weight.