Answer: Option d; 40.
Explanation: The question, in English, is:
How many choreographies did make Amalia Hernández?
Amalia Hernández was a Mexican dancer and choreographer, she started the "Ballet Moderno de Mexico" around 1950.
Reading a little about the ballet, we know that they performed more than 60 choreographies, where most of them were made by Amalia, and as we know, Amalia and the group did perform choreographies made by her.
