Answer:
The correct answer is - he found a new way to find the action of gastric juice with available techniques.
Step-by-step explanation:
Lazzaro Spallanzani was an Italian physiologist and biologist who describe the action of gastric juice with limited techniques with his creative thinking.
He dissected animals to find out the mechanism of digestive action. He performs an experiment on animals and uses them as a model for human digestion. He designed the experiment and first to tell the action of the gastric juice in the digestive process.