Classify the bolded subordinate clause as either an ADJECTIVE or an ADVERB clause. Beth stayed up late to finish reading her book even though she had to get up early the next
morning
adjective
adverb
No answer text provided.
No answer text provided.

It's an adverb

Explanation:

I just took a quiz with this question.

The best way to remember the difference between adverb and adjective is that adverb is the action and adjective is described something

michael’s company should invest in the updating of every section as well as data and processes technology and software. through the analysis of the manufacturing process, the company can take a clear approach towards the best way to improve not only the process but also de final result. some of the main problems that manufacturing companies face are the waste of material due to disorganized processes and the lack of real-time process checkings. this can be solved with specific software and machines that can turn paperwork into the digital era and that will reduce the time employees take on that, being this time better apply to control the production process and communication among different sectors of the company, the product will be made in shorter time with better quality and more profit

i think the answer would mist likely be an adjective clause, because unhappy is an adjective.