Finally, friends whom you haven't seen in years, long-lost relatives, and even mere acquaintances will begin calling in february to plan a lengthy visit with you in the summer.
what correction should be made to this sentence?
1)change friends to friend's
2) change february to februauy
3)remove the comma after years
4) change summer to summer
5) change haven't to have'nt

2 change february to February

This is a common pronoun hence one has to use a capital letter for a pronoun. Those are the name for things like the names of the cities or schools , general terms for common things.

it would be d). more resources must be obtained to attain that combination of goods and services

it brings together the military and civilian sectors of society to harness the total power of the nation. it is the mechanism that facilitates the successful prosecution of any conflict.it brings together the military and civilian sectors of society to harness the total power of the nation. it is the mechanism that facilitates the successful prosecution of any conflict.