Scientists must be creative

in case they need to invent experimental results
so they can design and conduct meaningful experiments
so they can draw interesting graphs and diagrams
in case they need to make up research data

So they can design experiments so "B' would be a good answer or "c" 
 
  

Well,what i learned was that unlike many other  endothermic  reactions,  photosynthesis  does not absorb energy as heat. instead, during plants absorb energy from sunlight to turn carbon dioxide and water into oxygen and glucose, which is a type of sugar molecule. the energy is stored in the glucose molecules, ready to be used when needed.