Question

read the passage.
despite hippopotamuses being relatively slow - moving mammals, they are quick to display their territoriality. when hippos sense a potential intruder encroaching upon their watery habitat, they respond aggressively. armed with powerful jaws and sharp canina and incisor teeth, they are often regarded as one of africas most dangerous animals when threatened. for the most part, they appear to be more highly reactive in the water than when they venture onto nearby land. in some cases, hippos have been known to overturn whole boats while defending their home range.
what is the meaning of encroaching as used in the passage?
existing within a complex ecosystem
returning home to ones place of origin
advancing past established boundaries
observing an area from a distance

Explanation:

El contexto del texto habla de hipopótamos que reaccionan agresivamente cuando sienten que un intruso está entrando en su hábitat acuático. La palabra "encroaching" se refiere a avanzar más allá de los límites establecidos (en este caso, el territorio de los hipopótamos).

Answer:

advancing past established boundaries