During-the-termite-experiment-in-lab-you-tested-several-types-of-pens-and-several-colors-of-pens-and-you-notice-that-the-termites-follow-the-trails-drawn-by-ball-point-pens-

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During the termite experiment in lab, you tested several types of pens and several colors of pens, and you notice that the termites follow the trails drawn by ball point pens. You hypothesize that the termites are only attracted to ball point pen ink.  What would be a prediction of your experiment? 

a.

If the termites are only attracted to the ball point ink, then the termites will only following trails drawn with black ink.
b.

If the termites are only attracted to the ball point ink, then the termites will only following trails drawn with ball point pens.
c.

If the termites are only attracted to the ball point ink, then ball point pens must contain pheromones that the termites are attracted to.
d.

If the termites are only attracted to the ball point ink, then gel pens must contain a pheromone that repels termites.