Fill in the blanks with appropriate prepositions

Hi Elif, let's solve this grammar question together, which tests your understanding of prepositions and sentence structure.

First, let's look at the structure of the sentence. It describes a change from basic self-preservation to complex social interactions over time.

Notice the contrast word yet. This suggests the first part of the sentence happens before or during a different stage than the second part.

Let's analyze the first blank. If we use Prior to, meaning before, it makes perfect sense because self preservation happens before settled communities are established.

If we look at other options like Following or Throughout, they don't fit as well with the contrast of moving toward complex social transactions later.