Anonymous how can the word "which" here has that function? and what is the grammar rule of this ? It is as you have said: it is an adverbial modifying the whole main clause: With age, veins and arteries lose their elasticity and ability to quickly transport blood throughout the body, which [fact/situtation] makes them less efficient.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Anonymous how can the word "which" here has that function? and what is the grammar rule of this ?It is as you have said: it is an adverbial modifying the whole main clause: