Bonjour,
1. Elle les leur a achetées.
2. Je veux le leur envoyer.
3. Marc ne la lui donne pas .
4. Montre les lui.
I think to talk sorry if not but I think
Answer:
Copernicus.
Explanation:
Nicolaus Copernicus was a Renaissance-era mathematician, astronomer, and Catholic canon who formulated a model of the universe that placed the Sun rather than Earth at the center of the universe. (Wikipedia)