Which of the following components of somatosensory conduction is most likely to provide the detailed sensory information that will help her distinguish her phone from other items?

A student is feeling inside her backpack to find her mobile phone, which has fallen to the bottom, and there are a number of items in the bag in addition to the phone. Which of the following components of somatosensory conduction is most likely to provide the detailed sensory information that will help her distinguish her phone from other items? (Points : 0.4)
The primary dorsal root ganglion neuron, the dorsal column neuron, and the thalamic neuron
A slow-conducting pathway that projects into the intralaminar nuclei of the thalamus
The opposite anterolateral pathway that travels to the reticular activating system
A bilateral, multisynaptic, slow-conducting tract

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