What is modification of a bill by the sub committee

The committee chair decides where the bill goes next, if he of she feels it requires further action. The political agenda of the majority party and the committee chair, as well as the committee's rules, all come into play at this point. The committee chair can refer the bill to one or more subcommittees based on their jurisdictions as listed in the committee rules, or the chair can hold the bill at the full committee level and not refer it to a subcommittee. Holding the bill at full committee level means one of two things: either the bill will be acted on quickly or it is being suppressed and will die from neglect. This is one of the stages where things can get tricky. A committee isn't required to act on measures referred to it; neither is a subcommittee. It only takes one subcommittee or committee to trip up a bill's progress, and it can happen without any visible activity. For example, if the leadership decides the bill does not fit within its overall agenda, a decision not to act will "kill" the bill just as effectively as a vote against it. The only way for a member to get the bill out of the committee should this happen is to use a discharge petition.

probably 3 since archeologists and historians don’t understand there writing.