which sentence contains a restrictive clause?\nthe road, which was long and winding, took us deeper and…

which sentence contains a restrictive clause?\nthe road, which was long and winding, took us deeper and deeper into the dark forest.\nthe parrot, which must have been tame, flew out of the tree and landed on my shoulder.\naware that i could be bitten, i carefully approached the trapped dog, which growled at me.\nthe astronaut who first stepped on the moon was neil armstrong.

which sentence contains a restrictive clause?\nthe road, which was long and winding, took us deeper and deeper into the dark forest.\nthe parrot, which must have been tame, flew out of the tree and landed on my shoulder.\naware that i could be bitten, i carefully approached the trapped dog, which growled at me.\nthe astronaut who first stepped on the moon was neil armstrong.

Answer

Brief Explanations:

A restrictive clause is essential to the meaning of the sentence and is not set off by commas. In the first three options, the clauses are non - restrictive (set off by commas). In the fourth option, "who first stepped on the moon" is essential to identify which astronaut is being referred to and is not set off by commas.

Answer:

The astronaut who first stepped on the moon was Neil Armstrong.