Update multi_select.rst

source/educators/references/course_development/exercise_tools/multi_select.rst

@@ -28,16 +28,16 @@ of the options that are correct answers, and none of the options that are
 incorrect. The course team must set up each multi-select problem to have at least
 one correct answer.
 
-As a best practice, be sure that all of the answer choices are unambiguous, and
-avoid trick questions. Multi-select problems with ambiguity can be frustrating to
+As a best practice, ensure all answer choices are unambiguous and
+avoid trick questions. Multi-select problems with ambiguity can frustrate
 learners, especially if the problems have a limited number of attempts.
 
 
 Example Multi-select Problem
 ****************************
 
 In the LMS, learners complete a multi-select problem by selecting the correct answers and leaving the incorrect ones unselected. An example of a completed multi-select
-problem follows.selecting the correct answers and leaving the incorrect ones unselected
+problem follows selecting the correct answers and leaving the incorrect ones unselected
 
 .. image:: /_images/educator_references/CheckboxExample.png
  :alt: An example multi-select problem in the LMS. This problem was incorrectly
@@ -58,4 +58,4 @@ selected **Show Answer** to reveal the correct answer and an explanation.
 
  :ref:`Multi select Problem XML` (reference)
 
- :ref:`Awarding Partial Credit in a Multi select Problem` (how to)
+ :ref:`Awarding Partial Credit in a Multi select Problem` (how to)