How does the image help convey the message of this poster?

The image of a large clock next to a lazy worker stresses the importance of being on time, particularly for work in the factories.
The image of a large clock next to an unproductive worker emphasizes the importance of utilizing every minute of production time.
The image of a large clock next to a tired worker supports the idea of maintaining fair working hours, even during the war.
The image of a large clock next to a slow worker suggests that faster production is the central key to winning the war.

The image of a large clock next to an unproductive worker emphasizes the importance of utilizing every minute of production time.

Explanation:

The poster in question is a British poster from the Second World War. Time has always been considered an important resource, and in time of war, it is priceless. Every minute is treasured and can make a difference, especially in the industry. Faster production does not necessarily lead to winning the war, but can affect its outcome. So, the poster tells the workers that they should use all the time they have and contribute as much as they can.