How can you focus your search for information and use your research time wisely?
a. do looping to choose the topic for your research paper
b. try webbing to arrive at a manageable topic for your research paper
c. follow a research plan to gather details about your topic

you can focus your search for information and use your research time wisely by follow a research plan to gather details about your topic, thus you get all your information and still being organized.

A good research plan should include information including; the topic, background, objectives, methods, data and execution. It should also demonstrate that the author is familiar with  his/her topic and related research.

i used to know but i learned it a long time ago sorry

explanation:

the rigid outer part of the earth, consisting of the crust and upper mantle is the lithosphere.     answer   crust and outer part of the mantle.