Choose the correct sentence: In 1838 Schleiden suggested that all plant were made of cells, In 1838 Schleiden suggested to all plants were made of cells, In 1838 Schleiden suggested that all plants were made of cells, In 1838 Schleiden suggest that all plants were made of cells

Choose the correct sentence: In 1838 Schleiden suggested that all plant were made of cells, In 1838 Schleiden suggested to all plants were made of cells, In 1838 Schleiden suggested that all plants were made of cells, In 1838 Schleiden suggest that all plants were made of cells

Explanation

In 1838 Schleiden suggested that all plants were made of cells.

This sentence is grammatically correct, using the appropriate past tense "suggested" and accurately stating the subject "all plants."