The fossils in a layer of rock are significantly different from those in the rock layer directly above it. One hypothesis to explain the difference is that a major extinction event occurred at the point in time represented by the transition between the two rock layers. Which of the following is the best plan for collecting data to use in a test of the hypothesis?

A) Examining the upper part of the lower rock layer for evidence of a catastrophic event, such as the presence of shocked quartz, iridium, or soot particles.

Explanation:

As the fossils are different from the above layers of the rocks than in the lower and another layer of the rocks this is due to the fact that the upper parts of the ricks are evidence of the catastrophic events as the presence of the quartz and the soot particles. The hypotheses explains this as a major extinction event that occurred in the point of time representing between the two layers of the rocks.

C.about 10% i think

The correct answer is kettles.