How have artists like Alison Krauss and Bela Fleck pushed the boundaries of Bluegrass? A They focused only on classical music and had no impact on Bluegrass. B They strictly preserved traditional Bluegrass, avoiding any outside influences. C They replaced acoustic instruments with electronic sounds, removing Bluegrass elements. D They blended Bluegrass with other genres like jazz and rock, expanding its musical reach.

## Step 1<br />The question asks about the ways in which artists like Alison Krauss and Bela Fleck have pushed the boundaries of Bluegrass. The options provided suggest different ways in which they might have done this.<br /><br />## Step 2<br />Option A suggests that they focused only on classical music and had no impact on Bluegrass. This is not accurate as both artists are known for their contributions to Bluegrass.<br /><br />## Step 3<br />Option B suggests that they strictly preserved traditional Bluegrass, avoiding any outside influences. This is also not accurate as both artists are known for their innovative approaches to the genre.<br /><br />## Step 4<br />Option C suggests that they instruments with electronic sounds, removing Bluegrass elements. This is not accurate as both artists are known for their use of acoustic instruments.<br /><br />## Step 5<br />Option D suggests that they blended Bluegrass with other genres like jazz and rock, expanding its musical reach. This is accurate as both artists are known for their innovative approaches to Bluegrass, which include blending it with other genres.