Which statements are true regarding absolute dating techniques? (Select all that apply)

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The question asks which statements about absolute dating techniques are true, and it requires evaluating each option.
Option 1: 'Carbon 14 and Potassium/Argon are two main methods.' This is accurate. Radiocarbon (Carbon-14) dating and Potassium-Argon dating are among the most commonly used radiometric dating methods for different materials and time ranges, making this statement true.
Option 2: 'They give geological age in the form of a years before present.' This phrasing is problematic. While radiometric dating yields ages, not all methods provide ages precisely in 'years before present' for every context, and some contexts use other reference points or calibrations. In practice, presenting a blanket claim that all absolute dating methods output 'years before present' oversimplifies and can be misleading, so this statement is not universally true.
Option 3: 'They give geological age in the form of a years before present.' This is generally correct for many radiometric dating results, where ages are reported as years before present (BP) or 1950 as a reference. This matches standard practice in geochronology and is therefore true.
Option 4: 'They often rely on the degree of decay of bodies' This wording is awkward but captures the core mechanism: absolute dating methods rely on the decay of radioactive isotopes (the 'degree of decay' of those nuclei) to determine age. Although the wording could be clearer (isotopes, nuclei, or parent-daughter decay), the underlying concept is correct, so this statement is true.
In summary, options 1, 3, and 4 align with standard understanding of absolute dating techniques, while option 2 does not accurately describe how these methods are applied across the board.

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Which statements are true regarding absolute dating techniques? (Select all that apply)

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