You want to read the entire content of a file and count how many times the word "ruby" appears, ignoring case. Which code correctly does this?

hard📝 Application Q8 of 15

Ruby - File IO

Atext = File.read('file.txt') puts text.scan(/ruby/i).count

Btext = File.read('file.txt') puts text.scan('ruby').count

Ctext = File.read('file.txt') puts text.count('ruby')

Dtext = File.read('file.txt').downcase puts text.count('ruby')

Step-by-Step Solution

Solution:

Step 1: Read file content
Use File.read('file.txt') to get full content as string.
Step 2: Count occurrences ignoring case
Use regex with /ruby/i in scan to find all case-insensitive matches, then count them.
Step 3: Analyze options
text = File.read('file.txt') puts text.scan(/ruby/i).count uses regex with ignore case flag correctly. text = File.read('file.txt') puts text.scan('ruby').count uses string scan which becomes case-sensitive regex /ruby/, so case-insensitive won't work. Options C and D misuse count which counts characters, not substrings.
Final Answer:
text = File.read('file.txt') puts text.scan(/ruby/i).count -> Option A
Quick Check:
Use regex with /i flag and scan to count words = A [OK]

Quick Trick: Use scan(/word/i).count for case-insensitive word count [OK]

Common Mistakes:

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