A transition can be defined as a word or sentences that helps the audience to navigate from one concept to another in a flow. Such flow helps the audience to move along the speech or presentation.
In the given sentence, the speaker's words are showing <u>transition between major concepts of presentation</u>. The speaker is, now, taking tha audience from <em>reviewing the problem </em>to the <em>solutions of the problem</em>.
Therefore, the given sentence is an example of 'transition.'
