Yes, it can.

No, it can't. This effect doesn't target Digimon in breeding areas.

This is a special rule for this card that treats it as a card that has [Sukamon] in its name. This is a rule and not an effect, therefore this card is treated as having [Sukamon] in its name when the card is in your hand, trash, or any other area.

No, it can't. This card's name is treated as having [Sukamon] in its name, but it is not treated as [Sukamon].

No, it can't. This card is an Option card, therefore it can't become a target for an effect that targets Digimon.

This effect changes 1 of your opponent's Digimon into a Digimon whose original name is [Sukamon], its original color is white, and its original DP is 3000.

The card information gained from the (Rule) will also be changed. For example, BT15-035 [Geremon]'s (Rule) gives it an original name of [Geremon/Numemon], but if its original card information is changed by this effect, its original name becomes just [Sukamon].

The card information gained from the effect remains as-is. For example, if EX1-005 [Tyrannomon]'s original card information is changed, its original color will become white, and EX1-005 [Tyrannomon]'s effect will also treat it as green, making it a 2-color white and green Digimon.

It remains as a white Digimon with 3000 DP and an original name of [Sukamon]. The gained effect is carried over even if the Digimon digivolves or one or more of its top cards are trashed.

It remains changed to a white Digimon with an original name of [Sukamon] and 3000 DP, but any card information that it didn't originally have can't be changed. If it becomes a Tamer or Digi-Egg card, or if it becomes a card that didn't originally have DP, then it will remain without DP.