#1 - Researchers put two electrodes in a pool that a dolphin

[Administrator]

Please post your questions below!

[shanelsat123]

Hello! I have been trying to understand why this Question is answer B over D.

In my humble and obviously incorrect opinion, there is not enough evidence in the Question Stimulus to say that the Dolphin's Vibrissal Crypts enable dolphins to sense Electric Fields. I was thinking that there is just enough evidence that the Vibrissal Crypts could potentially do something else and the electric field actually interferes with the normal function causing the dolphin to react in a way to avoid the area, not necessarily sensing an electric field.

Regardless of how my brain managed to get one of the easier questions incorrect, what is the correct way to decided B over D?

[Luke Haqq]

Hi shanelsat123!

This stimulus provides us with sufficient material to infer a cause and effect relationship. Depending on how you phrase it, the cause could be understood to be "uncovered vibrissal crypts," with the effect being that dolphins would swim away from activated electrodes. The stimulus then bolsters that such a cause and effect relationship exists by noting that when the cause is missing, so also is the effect. Answer choice (B) states that causal relationship that isn't explicitly stated in the stimulus.

By contrast, answer choice (D) is something that we don't know based on the stimulus. We can know that the electric fields and vibrissal crypts interact with one another, but we don't know that they specifically interfere with normal functioning.