Cannot convert value of type 'int' to expected argument type 'string'?

Hello everyone. I was a building a test app when I encountered this error:

I'm new to indices and am a bit confused by them. Can someone please explain the error to me and show me a possible solution to it? Many thanks!

Here is my code:

import SwiftUI

struct GameView: View { @StateObject var viewModel = GameViewModel()

var body: some View {
    ZStack {
        GameColor.main.ignoresSafeArea()
        VStack {
            Text(viewModel.progressText)
                .padding()
            Spacer()
            Text(viewModel.questionText)
                .font(.title)
                .multilineTextAlignment(.center)
                .padding()
            Spacer()
            Spacer()
            HStack {
                
                 ForEach(0..<viewModel.answerIndices.count, id: \.self) { index in
                     AnswerButton(text: viewModel.answerIndices[index]) {
              //  ForEach(viewModel.answerIndices) { index in
                 //   AnswerButton(text: viewModel.answerText(for: index)) {
                        viewModel.makeSelectionForCurrentQuestion(at: index)
                    }
                    .background(viewModel.colorForButton(at: index))
                    .disabled(viewModel.selectionWasMade)
                }
            }
            if viewModel.selectionWasMade {
                Button(action: viewModel.advanceGameState,
                       label: {
                        BottomText(str: "Next")
                })
            }
        }.padding(.bottom)
    }
    .navigationBarHidden(true)
    .background(resultsNavigationLink)
}
private var resultsNavigationLink: some View {
    NavigationLink(
        destination: ResultsView(viewModel: ResultsViewModel(selectionCount: viewModel.selectionCount, gameStartTime: viewModel.gameStartTime, gameEndTime: Date())),
        isActive: .constant(viewModel.gameIsOver),
        label: { EmptyView() })
}

}

struct AnswerButton: View { let text: String let onClick: () -> Void var body: some View { Button(action: { onClick() }) { Text(text) } .padding() .border(Color.blue, width: 4) } }

struct ContentView_Previews: PreviewProvider { static var previews: some View { NavigationView { GameView() } } }

(Above is the view; this is the model:

import SwiftUI

class GameViewModel: ObservableObject { @Published var game = Game()

var questionText: String {
    game.currentQuestion.questionText
}

var answerIndices: Range<Int> {
    game.currentQuestion.possibleAnswers.indices
}

var correctAnswerIndex: Int {
    game.currentQuestion.correctAnswerIndex
}

var progressText: String {
    "Question \(game.currentQuestionIndex + 1) / \(game.questionCount)"
}

var selectionWasMade: Bool {
    game.selections[game.currentQuestion] != nil
}

var selectionCount: (Int, Int) {
    game.selectionCount
}

var gameIsOver: Bool {
    game.gameIsOver
}

var gameStartTime: Date {
    game.startTime
}

func answerText(for index: Int) -> String {
    game.currentQuestion.possibleAnswers[index]
}

func advanceGameState() {
    game.advanceGameState()
}

func makeSelectionForCurrentQuestion(at index: Int) {
    game.makeSelection(at: index)
}

func colorForButton(at buttonIndex: Int) -> Color {
    guard let selectedIndex = game.selections[game.currentQuestion], selectedIndex == buttonIndex else { return .clear }
    if selectedIndex == correctAnswerIndex {
        return .green
    } else {
        return .red
    }
}

}

Thanks for the help in advance!