Choose the correct meaning: Call it a day

The idiom "call it a day" means to decide to stop working on something, or to conclude an activity for the day. It signifies the end of a period of work or effort, often implying that enough has been done, or that it's time to rest. This phrase is widely used in both professional and casual settings. For example, after a long day at the office, an employee might say, "I'm tired, I think I'll call it a day," meaning they are finishing their work for that particular day. Similarly, if a group is working on a project and decides they've made sufficient progress, one might suggest, "Let's call it a day and pick this up tomorrow." It doesn't necessarily mean going to sleep early or taking a holiday, but rather the cessation of current tasks. Therefore, option B, "End work," is the most accurate meaning, encapsulating the decision to stop an activity or job for the remainder of the day.