Bandwagon, because he's hopping on board with reviewers and bloggers.
A and C
A: Other writers in these communities often suggest great writing topics.
C: You receive feedback from people who understand the craft of writing.
The other two don’t seem plausible. Sorry if it’s incorrect.
Answer:
have/deal/by/of/countries/exported/government/our/will/great/been/to/a/oil/other/our
Our exported oil has been a great deal to other countries by government will.
Explanation:
Solution are the ways to solve any problem.