Ice Clip through the crumble blocks using a Multiviola from the bottom of the room and then Crumble Jump to clip through the bomb blocks. The ice clip can be setup by standing in a corner and firing forward when the Multiviola hits Samus, if it is moving downwards towards Samus. Very quickly jump and morph to place a bomb against the bomb blocks. Or break the crumble blocks and use SpringBall to jump again to place the bomb. Then jump again while the Multiviola is still frozen to clip through.

Requires:

{
  "notable": "Multiviola Ice Clip"
}
"h_heatProof"
"h_canPreciseIceClip"
{
  "enemyDamage": {
    "enemy": "Multiviola",
    "type": "contact",
    "hits": 1
  }
}
{
  "obstaclesNotCleared": [
    "A"
  ]
}
"h_canUseMorphBombs"
{
  "or": [
    "h_canUseSpringBall",
    "can4HighMidAirMorph"
  ]
}

Clears obstacles: B