Answer:
El conflicto entre los españoles y los mapuches duró 300 años.
La tribu mapuche es el grupo indígena más grande de Chile.
Hay más de un millón de personas indígenas en Chile.
Explanation: We must choose the true sentences:
1) El conflicto entre los españoles y los mapuches duró 300 años. (The conflict between the Spaniards and the Mapuches lasted 300 years.)
Called as the Arauco War, almost 300 years, but the actuall conflicts started before that, so this sentence would be true.
2) PEIB es un programa que tiene como meta preservar idiomas indígenas. ( PEIB is a program that aims to preserve indigenous languages.)
PEIB stabds for "Programa de Educación Intercultural Bilingüe " the objetive of this program is strengthen the teaching profession, estimulate the cultural and artistic action in the students and other things related, so the sentence is false.
3) Temuco es nombre de un parque nacional, un centro de esquí y un volcán. (Temuco is the name of a national park, a ski center and a volcano.)
Temuco is a city located at the south of Santiago, this centence is false.
4) La tribu mapuche es el grupo indígena más grande de Chile. (The Mapuche tribe is the largest indigenous group in Chile.)
Yes, this is true, the Mapuche tribe is the biggest one not only in Chile, also in Argentina.
5) Hay más de un millón de personas indígenas en Chile. (There are more than one million indigenous people in Chile.)
According to census in 2017, 2,185,792 declarated to be indigenous (in this case the descendents are also included) so yes, there is more than a million of indigenous people in Chile.