Which is the best example of solid deductive reasoning?

Statments

All dolphins are mammals.  

All mammals have kidneys.

All numbers ending in 0 or 5 are divisible by 5. The number 35 ends with a 5, so it must be divisible by 5.

All birds have feathers. All robins are birds. Therefore, robins have feathers.

It's dangerous to drive on icy streets. The streets are icy now, so it would be dangerous to drive on the streets.

All cats have a keen sense of smell. Fluffy is a cat, so Fluffy has a keen sense of smell.

Cacti are plants, and all plants perform photosynthesis. Therefore, cacti perform photosynthesis.

Red meat has iron in it, and beef is red meat. Therefore, beef has iron in it.

Acute angles are less than 90 degrees. This angle is 40 degrees, so it must be an acute angle.

All noble gases are stable. Helium is a noble gas, so helium is stable.

Elephants have cells in their bodies, and all cells have DNA. Therefore, elephants have DNA.

All horses have manes. The Arabian is a horse; therefore, Arabians have manes.

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i believe it is he has been given the drum as a joke.

halibut, flounder, tuna, and trout are all fish. so your first answer is 1.) fish. and since fish is edible, your next answer would be 3). edible

to describe those fishes more thoroughly, some of those fishes live in fresh water, and some of the fishes live in salt water, and that is not a thing that they all have in common. the question is asking what is common with all of the fish, so answer choices 2). fresh water and 4). salt water are not right.