The correct answer is - he found a new way to find the action of gastric juice with available techniques.
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.
Lazzaro Spallanzani's experiment is a good example of creativity, because he designed the experiment and found a new way to explore gastric juices. So...
Lazzaro Spallanzani, an Italian biologist and physicologist, was the first scientist to dissect animals for digestion trials.
He used the animals as models for humans digestive system, designed the experiment, and was the first to interpret the process of digestion.
The correct answer is "spindle apparatus" or "mitotic/meiotic spindle" or just "spindle". The spindle is a structure made of microtubules wherein it acts to separate the sister chromatids from the daughter cells, eventually separating chromatids from one pole to the other.
