Which best describes a strong research question for an informative essay?

a) a strong research question appeals to common knowledge, has a “yes” or “no” answer, and can be discussed in several paragraphs

b) a strong research question goes beyond common knowledge, has a “yes” or “no” answer, and can be discussed in several paragraphs.

c) a strong research question appeals to common knowledge, inspires curiosity, and can be discussed in several paragraphs.

d) a strong research question goes beyond common knowledge, inspires curiosity, and can be discussed in several paragraphs.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.

a they donate money to humanitarian causes

c   they volunteer to alleviate suffering

d   they blame all muslims for not being able to keep their fellow muslims in line.