This is the 10178th most frequent Turkish word.
başlıca
Main, principal, primary.
In this sentence, 'başlıca' is used as an adjective meaning 'main' or 'primary' to describe the 'target'. It focuses on the central or most important one among options.
Başlıca hedefimiz çevreyi korumaktır.
Our main goal is to protect the environment.
Here, 'başlıca' acts as an adjective qualifying 'issues' with a connotation of importance or priority, emphasizing its prominence among other issues.
Başlıca sorunlarımızdan biri ulaşım sıkıntılarıdır.
One of our major problems is transportation difficulties.
In this context, 'başlıca' modifies the plural noun 'topics' to indicate the most significant subjects reviewed, again functioning as an adjective.