[Solved] A developer sends this GraphQL query:query { product(id: 10) { name price } }The server returns an error. What is the most probable cause? | GraphQL

GraphQL - Basics and Philosophy

A developer sends this GraphQL query:

query { product(id: 10) { name price } }

The server returns an error. What is the most probable cause?

AThe fields 'name' and 'price' are invalid in GraphQL.

BGraphQL queries cannot have arguments.

CThe id argument should be a string, so it must be quoted.

DThe query must use mutation instead of query.

Step-by-Step Solution

Solution:

Step 1: Check argument syntax
GraphQL requires string arguments to be quoted.
Step 2: Analyze error cause
Passing id: 10 without quotes causes syntax error if id is a String type.
Final Answer:
The id argument should be a string, so it must be quoted. -> Option C
Quick Check:
String arguments need quotes in GraphQL [OK]

Quick Trick: String arguments must be quoted in GraphQL queries [OK]

Common Mistakes:

Master "Basics and Philosophy" in GraphQL

9 interactive learning modes - each teaches the same concept differently

More GraphQL Quizzes

A developer sends this GraphQL query: