Sally's adolescent classmates call her and the other 125 members of her advanced computer software group "nerds," meaning she is part of a

correct fill up is crowd

Explanation:

solution

there is a large number of member group is created of 125 members

Sally's is also part of that advanced computer software group in the crowd  

as crowd become when a large number of people gathered at any place or any group  

here sally and 125 other makers gathered so she becomes part of the crowd

so here correct fill up is crowd

answer would be b, a tariffs main purpose is to protect domestic production and jobs.