Select the phrase from the drop down menu that correctly completes the sentence with parallel structure.
before becoming president, theodore roosevelt served as a deputy sheriff reformed a police department, and
a. he led the rough riders up san juan hill
b. he was a solider who led the rough riders up san juan hill
c. led the rough riders up san juan hill
d. was a solider who led the rough riders up san juan hill

The correct answer is option C.

In the given sentence we have the verbs "served" and "reformed" both conjugated in the Simple Past Tense.

In order to correctly complete the parallel structure we should use option C (led the rough riders up San Juan hill) where the verb "led" is also conjugated in Simple Past Tense.  

The full sentence would be: "Before becoming president, Theodore Roosevelt served as deputy sheriff, reformed a police department, and led the rough riders up San Juan hill".

i believe that the answer is b! i hope i out!

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

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