President Lincolns oath of office required him to defend and preserve the union
I think the best answer would be C. Putting on an act in order to impress others. Hope this helps!
Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine
It ensures only key ideas are included.
It keeps the list of actions to a minimum.
It makes sure that only essential ideas and points are included.
