Consider the following sequence of Twitter events between $4$ users:

Step $0$: Joe and Ravi follow Mary. Mary follows Leila.

Step $1$: Leila sends a tweet.

Step $2$: Ravi follows Leila

Step $3$: Mary retweets Leila$$s message.

Step $4$: Joe follows Leila

Step $5$: Leila follows Joe

Step $6$: Ravi follows Joe

Which of these topological changes can be described as adaptive $($i$.$e$.,$ caused by information transfer activity on the network$)?$

Group of answer choices

Ravi following Leila

Mary following Leila

Joe following Leila

Ravi following Joe