Final answer:
The first sentence uses a time transitional expression, the second sentence uses an example transitional expression, the third sentence uses a contrast transitional expression, and the fourth sentence uses a clarification transitional expression.
Step-by-step explanation:
The first sentence 'Simultaneously, Monique got started on the graphs and David worked on the content.' uses the transitional expression 'Simultaneously' to indicate that two actions are happening at the same time. This is an example of a time transitional expression.
The second sentence 'For instance, analysts must work on data for weeks before they even begin to reach conclusions.' uses the transitional expression 'For instance' to provide an example. This is an example of an example transitional expression.
The third sentence 'On the other hand, the internet has made access to information much easier and faster than it was before.' uses the transitional expression 'On the other hand' to show contrast between two ideas. This is an example of a contrast transitional expression.
The fourth sentence 'Generally, turtles sleep at night, even during severe weather conditions.' uses the transitional expression 'Generally' to provide clarification or general information. This is an example of a clarification transitional expression.