Options A and C contain tense inconsistencies. A: 'Raj wanted to visit his grandma, but cannot find' mixes past tense 'wanted' with present 'cannot', should be 'could not find'. C: 'They left the house around ten, walked to town and end up' mixes past 'left/walked' with present 'end up', should be 'ended up'. Options B and D maintain consistent tense throughout.