Which two characteristics create an effective research question? broad
concise
clear
simplistic

Answer below, pleaseee mark me brainliest!!!

Explanation:

It would be concise and clear. You want you research question to be brief but clear so there is no room for error or confusion.

Hope this helps!

the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.