Answer:
Calculating the age of a skeleton can be done by looking at the number of fused bones (option 3).
Explanation:
The calculation of skeleton bone age takes into account the complete ossification of bones, which occurs at various stages of human development.
<u>In childhood, the epiphyses or ends of long bones are not completely ossified but are formed by cartilage</u>, due to the process of growth. When development is achieved, the growth nuclei and cartilage disappear.
Bone age is a reliable parameter for calculating chronological age, as they are quite approximate.
The other options are not correct because:
<em> 1. </em><u><em>The length of the femur</em></u><em> is useful for calculating height.
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<em> 2. </em><u><em>The shape of the pelvis</em></u><em> helps to differentiate the sex.
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<em> 4. </em><u><em>The color of the bones</em></u><em> is not a useful parameter to calculate the age of the skeleton.</em>