I suggest you to go with first one a. there was heavy damage only within a mile of the bomb's impact. There're no closer description than that.
A local party organization is an organization responsible for a political party's activities below the state level but is not registered with the Federal Election Commission as a district or local party committee.
National committees have the greatest role in the years of a presidential election, they are responsible for planning the nominating convention and also spend heavily in support of their party's nominee.
Profit can be best defined as gain.
