Where, if at all, should one or more commas be added in the following sentence? the planet mars which is earth's nearest neighbor has long fascinated scientists as well as science-fiction fans.

"The planet Mars, wich is Earth's nearest neighbor, has long fascinated scientists as well as science-fiction fans."

We use here commas to connect two separated clauses one beign "the planet mars has long fascinated scientists as well as science-fiction fans  and the other is planet Mars being Earth's nearest neighbor.

The correct option is:

The planet Mars, which is Earth's nearest neighbor, has long fascinated scientists as well as science-fiction fans.

Explanation:

There are defining and non-defining relative clauses. Defining relative clauses provide essential information, whereas non-defining can be removed without altering the meaning of the sentence.

In this case, "which is Earth's nearest neighbor" can be removed without changing the meaning.

answer: ,nnn

explanation:

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