Question

read the passage and then answer the question. sedimentary rock forms in layers over time. when the layers form, plant and animal remains can create fossils in the rock. older rock layers are usually found deeper underground. unfortunately, movements of earths tectonic plates can cause some older layers to appear higher than younger layers. this movement makes determining the age of rocks challenging. however, geologists can use fossils to help them decipher the age of rock layers. this is why fossils are so important. what is the meaning of decipher as used in the passage? figure out change erase hide

Explanation:

To determine the meaning of "decipher" in the passage, we analyze the context. The passage states that determining the age of rocks is challenging, but geologists use fossils to help with this task. "Figure out" means to solve or understand something, which fits the context of geologists using fossils to understand the age of rock layers. "Change," "erase," and "hide" do not match the context of determining age.

Answer:

figure out