Explanation for each option
Option A – False .Because larger block size incurs better spatial locality.
Option B – False. Decreasing a block size or having small block leads to bigger tag size ( more tag bits) hence higher tag overhead.
Option C – False . Can’t relate larger cache tag with lower cache hit time.
Option D – True . As it take less time to load a small block into cache from main memory in case of miss , so smaller block size incurs a lower cache miss penalty .