Mango, tuna fish and snow leopards are
both eurythermal and euryhaline
The correct option is C stenothermal
Mango, tuna fish and snow leopards are stenothermal. These are organisms which can tolerate only a very small range of variations in surrounding temperature. They live in area where temperature is uniform throughout the year i.e., restricted at narrow temperature zone.
Euryhaline organisms are those which can tolerate and survive in a wide range of saline conditions.
Eurythermal organisms are those which can survive a wide range of temperature variations in their surroundings.