Please answerr giving brainliest to correct answer

Step-by-step explanation:

In the morning Elizabeth has three transportation options to work.

It is :

In the evening Elizabeth has the same three transportation options to go home.

It is again.

But if we consider that she will take the cab once, the options will change to because now she can choose 2 options out of 3.

In order to use the cab once, we have two options:

She will use the cab in the morning or she will use the cab in the evening:

First route (cab in the morning):

Second route (cab in the evening):

We have two routes, so

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step-by-step explanation: