Alright! Let's break down these options one by one and find out which fits best in the sentence: “............., I can say that the dinner was a complete disaster.”
a) All in all - This phrase is used when you're summarizing or concluding something by considering all aspects or elements. It's like saying, "Taking everything into account." Example: "All in all, it was a good trip despite the rain."
b) As a matter of fact - This phrase is used to emphasize a piece of information, often correcting or adding to something that was just mentioned. Example: "I'm not a big fan of pizza. As a matter of fact, I rarely eat it."
c) Obviously - This word is used when something is very clear and easy to understand or see. It's like saying, "It’s clear for everyone to see." Example: "Obviously, he was the star of the show; his performance was outstanding."
d) In fact - This phrase is similar to "as a matter of fact," but slightly less emphatic. It's used to introduce some additional information, often something surprising or contrasting with what was said before. Example: "I didn’t just complete the race; in fact, I won it."
Now, let's analyze the sentence you provided. The sentence is concluding or summarizing the experience of the dinner by stating it was a disaster. The best fit for this kind of summarization would be "All in all" as it implies that after considering everything about the dinner, the conclusion is that it was a disaster.
So the complete sentence would be: “All in all, I can say that the dinner was a complete disaster.”
Here it implies that, taking into account every aspect of the dinner, the overall impression or conclusion is that it wasn’t successful.