What does a metasearch engine do?
a metasearch engine searches directories and databases for text only.
a metasearch engine compiles information from subscription databases and publishes them.
a metasearch engine searches for digital and audio files and indexes them by category.
a metasearch engine searches the databases of multiple search engines simultaneously.

faulty parallelism is a grammar construction where there is no balance in the parts of a sentence they have a similar meaning but the grammar structure is not equivalent.

the correct version of this faulty parallelism in the sentence is:

jefferson wrote the declaration of independence, and he was the nation's third president.

the problem with the first version is that the sentence:

"jefferson was both the writer of the declaration of independence"

presents jefferson as both a subject and an agent for the verb "write" because if he was "the writer" then the declaration of independence was written by him, besides that fact, the sentence presents a dependent clause.

while the second sentence:

he was the nation's third president.

presents a basic subject+verb+object structure

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in both sentences:

jefferson wrote the declaration of independence, and he was the nation third president.

to leave the reader thinking and wandering on their own. without a resolution we are clueless to what happens next, and why it does. it may even cause suspension with the reader.

explanation: