Question

I need help with poems, I do not understand how to be able to tell what they are feeling or what the poet means by things... here is the first question:
"clearances" which of the following lines from the poem best reflects the connection shared by mother and son? *like solder weeping off the soldering iron *cold comforts set between us, things to share *i remembered her head bent towards my head *her breath in mine, our fluent dipping knives
if anyone could explain this to me it would really help!