I think it is answer A.
I may be wrong don't quote me!!
Answer:
'Although choosing between the model types like desktop and laptop is a decision for the consumer, the decision is personal.'
Explanation:
Conjunctions are defined as the words that are used to connect two or more words, clauses(principle and subordinate), phrases, or sentences. They are of three types: coordinating conjunction, subordinating conjunction, and correlative conjunction. Coordinating conjunctions like 'and', 'but', 'yet' etc. are employed to join two independent clauses or words and phrases while subordinating conjunction is used in complex sentences to link a dependent clause along with an independent clause. Correlative conjunction are used in pairs. For example, 'between/and', 'but/also', etc.
As per the question, the given sentences could be linked together to form a single complex sentence as:
'Although choosing between the model types like desktop and laptop is a decision for the consumer, the decision is personal.'
Here conjunction 'although' is used to introduce the dependent clause and that is followed by the independent clause to accomplish the meaning.
