In which sentence is the underlined clause an adjective clause? invisible braces, which are made of a special material, were developed by a company making missile trackers. athletic shoe makers gave shoes more bounce when they used the same materials that are found in moon boots. nasa created the first smoke detectors when they built the space station. whoever uses an ear thermometer is using the same technology that nasa uses to measure the temperature of stars.

The correct answer is:

Invisible braces, which are made of a special material, were developed by a company making missile trackers.

Explanation:

An adjective clause is a clause including one or more adjectives, which qualifies a noun. An adjective clause starts with a relative pronoun (such as who, that, which) or a related adverb (who, where, when). An adjective clause is a dependent clause that, like an adjective, qualifies a noun or pronoun.

is this an essay or multiple choice

answer; (d) none of the above;