Although, this is a controversial topic and it is hard to state exactly how much income share the top 1% or how much of the United State's wealth rests with the wealthiest top 1% but, it can be said that approximately one-third (1/3) of the wealth remains with the top 1%. Also, some of the sources like Washington Post suggests that up to 40% of the wealth rests with the US top 1% households. Hence, given the options, 1/3 is most suitable.
regulating screen time as well as what exactly is is the kid is watching, you can’t change the whole network so in doing so by the individual only you can regulate this.