Which timeline best shows the history of the development of cell theory?

The second image is the correct answer.

Explanation:

The cell was discovered by Rober Hooke when analyzing cork cuts under a microscope. He verified the presence of small spaces, which he called a cell, a word derived from the Latin cellula which means small compartment. After Hooke's analysis, several studies were developed in order to better understand the functioning of these structures. In 1676, Antonie van Leeuwenhoek analyzed some cells and realized that they were not just empty compartments, but had internal structures.

Studying animal and plant tissues, Theodor Schwann and Mathias Schleiden came to very similar conclusions about cells. They published their ideas independently and claimed that all organisms were made up of cells. There emerged the main pillar of Cell Theory.

In 1855, Rudolf Virchow, a German pathologist who agreed with Schwann and Schleiden's ideas, stated, after some studies, that all cells originated from pre-existing cells. The point highlighted by Virchow was also incorporated into cell theory.