Question

Smoking is dangerous.However, a lot of adults still smoke -> Although

Answer 1

Although smoking is dangerous , a lot of adults still smoke.

Answer 2

Smoking is dangerous.However, a lot of adults still smoke 

-> Although smoking is dangerous, a lot of adults still smoke.

Answer 3

Although smoking is dangerous , a lot of adults still smoke.

Answer 4

Smoking is dangerous.However, a lot of adults still smoke

⇒Although smoking is dangerous, a lot of adults still smoke.