Question: Indicate which of the following options does NOT suppose a normal response of the child's motor development in its first year of life: 
 Options:  <1> By 3 months, he is able to hold his head when he is incorporated. <2> By 4 months, the trunk begins to straighten up although the balance is still immature. <3> By 8 months, he dominates the sitting position and frees his hands to hold objects while maintaining balance. <4> Towards 10 months, start some steps. <5> By 12 months, the act of running appears.
5