According to theory, being aware of another person's presence divides our attention between this person and the task at hand. this division of attention is arousing, which explains why people perform better on well-learned tasks in the presence of others.

The answer is "distraction-conflict theory".

Distraction–conflict theory proposes that attentional clash may be the key middle person of drive in investigate settings.

Distraction–conflict theory can account post hoc for the discoveries that show that evaluative or focused weight increases social help or weakness; unimportant nearness every so often creates social assistance without evaluative or aggressive weight; social loafing can happen on basic very much learned assignments; and concealed gatherings of people deliver social assistance. The attentional accentuation recommends that diversion may have an assortment of impacts on perception, state of mind change, and social conduct.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

your answer is "graduates" hope this