Spatial organization means that when describing an item, one would start from the left and move to the right.
The gut instinct follower is arguably the simplest decision maker and tends to choose the first option in haste.
When confronted with two possibilities and a handful of information on each, the instinct follower will generally form an immediate impression, and side with wherever that impression lands.
And mostly that is the correct decision but sometimes you just make the decision too quickly and waste it by choosing the very first option on the list.
The usage if vast in this passage means large, therefore the answer is A.
Someone who can speak or understand multiple languages
