My tick.mcfunction isn’t running every tick :(

Here’s the folder structure, tick.mcfunction and tick.json contents:
├── minecraft
│   └── tags
│       └── function
│           └── tick.json
└── mcd
    └── function
        └── tick.mcfunction```

```say testing tick!
scoreboard players enable @a options
execute if score @a options matches 1.. run function mcd:option_init```

```{
    "values": ["mcd:tick"]
}```