Answer:
The sentences that indicate that Rainsford is an experienced hunter and outdoor enthusiast are :
Step-by-step explanation:
"Some wounded thing, by the evidence a large animal, had to thrashed about in the underbrush."
"The jungle weeds were crushed down and the moss was lacerated; one patch of weeds with stained crimson."
"A small, glittering object not far away caught Rainford's eye and he picked it up. It was an empty cartridge."
All these sentences indicate his experience about hunting or finding animals during tracking in outdoors