Here are steps for you:
1.Select the Answer column -> Column settings -> Format this column.
2.Advanced mode, use following codes.
{
"$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
"elmType": "div",
"txtContent": "@currentField",
"style": {
"width": "500px",
"height": "Auto"
}
}
3.Grag the right edge of Answer column header.
4.Click the dropdown of All Items -> Save view as -> All Items -> Save.
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