The three-spine stickleback is a small fish that lives both in oceans and in freshwater lakes. While ocean stickleback are covered with armor to protect them from their predators, lake stickleback have virtually no armor.

Since armor limits the speed of a stickleback's growth, this indicates that having a larger size is a better defense against the lake stickleback's predators than having

armor.

Which one of the following, if true, weakens the argument?

A) Sticklebacks with armor are unable to swim as fast, making them most vulnerable to fast-moving predators.

B) Having a larger size is an important factor in whether lake stickleback, but not ocean stickleback, survive cold winters.

C) Unlike ocean stickleback, the lake stickleback are more often preyed upon by predatory insects than by larger fish.

D) Both ocean stickleback and lake stickleback feed primarily on the same types of foods.

E) Sticklebacks originated in the ocean but began populating freshwater lakes and streams following the last ice age.

I absolutely do not understand why the correct answer is B and not C.

Why is the correct answer C?

Essayist: The historical figures that we find most engaging are very rarely those who are morally most virtuous. What most commonly distinguishes them is their bravery and creativity. Thus, moral virtue is not among the characteristics that we admire most, since the people whose lives we would most like to live are those with characteristics we admire most.

Which one of the following is an assumption required by the essayist's argument?

A) The historical figures that we find most engaging are those lives we would most like to live.

B) Bravery and creativity are characteristics that makes it more difficult to be morally virtuous.

C) Historical figures are very rarely morally virtuous.

D) People develops their conception of what makes an individual admirable based on what they know about historical figures

E) Moral virtue is the characteristics of historical figures that we find least engaging.

Why is the correct answer A and not B?

Dentist: Five recently conducted studies all show that the proportion of children with decayed, missing, or filled teeth is lower in Europe, where water is not fluoridated, than in the United States, where it is. This is convincing evidence that fluoridation of water does not have a substantial tendency to prevent tooth decay.

Which one of the following, if true, would most strengthen the dentist's argument?

(A) Toothpaste containing fluoride is widely available in both the United States and Europe. (B) Nearly all dentists in the United States use dental treatments involving the application of fluoride directly to tooth surfaces.

(C) Dental hygiene is typically taught in elementary school in both Europe and the United States.

(D) On average, children in Europe receive dental checkups more frequently than children in the United States.

(E) The diets of children in the United States are not generally worse for teeth than those of children in Europe.

Wanna get together and go over some drills, PTs together? I'm based in Santa Clara.

Curious how many of you are going to the test center Nov 4 vs testing remotely