What is the most logical next event?

They are juicing a lemon on an electric juicer that is placed on the kitchen counter near the sink. The boy seems excited to help his grandmother juice the lemon. he

Available options: -stands up and takes the lemon out of the glass.. -grabs the container of water, soaking it in water and then cleaning the juicer.. -puts his hand over her hand while she is juicing the lemon.. -pours more juice into three glasses and adds sugar and chocolate chips to it..
puts his hand over her hand while she is juicing the lemon.