This is the 755th most frequent Italian word.
trovano
"Trova**no**" means "they find."
Here, 'trovano' is used to indicate the act of discovering or encountering something, performed by the subject 'gli esploratori' (the explorers).
Nella foresta, gli esploratori trovano delle tracce di animali.
In the forest, the explorers find animal tracks.
In this sentence, 'si trovano' forms a reflexive construction to indicate the location or existence of something in a place, emphasizing that the answers 'are located' rather than being actively found by someone.
Le risposte corrette si trovano alla fine del libro.
The correct answers are found at the end of the book.
'Trovano' here expresses the action of discovering or developing something new, related to the subject 'Gli scienziati' (The scientists).