Combination of the Star and bus topologies.
Answer: Option 2.
Step-by-step explanation:
A tree topology is a formal composed report containing business objectives, the techniques on how these objectives can be accomplished, and the time period inside which these objectives should be accomplished.
A tree network, or star-bus network, is a mixture organize topology in which star systems are interconnected by means of transport systems. Tree systems are various leveled, and every hub can have a discretionary number of kid hubs.