Explanation

By uses

ایسی سواری جس میں کھڑے ہو کر جا سکیں مثلا بس، ٹرین وغیرہ تو بائی لگاتے ہیں

In uses

ایسی سواری جس میں کھڑے ہو کرنہ جایا جا سکے مثلا کار  وغیرہ تو ان لگاتے ہیں

Additional Information

"In" is often used for private transportation, such as "in a car," and "by" is commonly used for public transportation, such as "by bus" or "by train." However, in the context of the sentence "Most of the guests arrived ______ car," both "by" and "in" can be used to convey slightly different meanings:

1. "Most of the guests arrived by car": This indicates that the guests used cars as their mode of transportation to arrive at the destination. "By" emphasizes the method or means of transportation.

2. "Most of the guests arrived in a car": This also indicates that the guests used cars, but it specifically refers to the fact that each guest arrived in their own individual car or in cars belonging to their group. "In" emphasizes the physical space or container used for transportation.

Both "by" and "in" are acceptable in this context, but "by" is more commonly used when emphasizing the means of transportation, which is why it was initially suggested. However, "in" could also be used to emphasize the individual cars the guests arrived in.