Which jQuery method is used to change the background color of all paragraphs to yellow?

Which jQuery method is used to change the opacity of all <div> elements to 0.5?

A). $('div').setOpacity(0.5);

B). $('div').opacity(0.5);

C). $('div').css('opacity', 0.5);

D). $('div').opacity = 0.5;

How to change the text content of all <h1> elements to 'New Heading' using jQuery?

A). $('h1').html('New Heading');

B). $('h1').textContent = 'New Heading';

C). $('h1').text('New Heading');

D). $('h1').innerText('New Heading');

How to set the value of the placeholder attribute to 'Enter text' for all <input> elements using jQuery?

A). $('input').placeholder('Enter text');

B). $('input').setAttribute('placeholder', 'Enter text');

C). $('input').attr('placeholder', 'Enter text');

D). $('input').attr('placeholder', 'Enter text');

Which jQuery method is used to change the font weight of all<h2> elements to bold?

A). $('h2').style('font-weight', 'bold');

B). $('h2').fontWeight('bold');

C). $('h2').css('font-weight', 'bold');

D). $('h2').bold();

How to add the class 'active' to all<li> elements within a<ul> using jQuery?

A). $('ul li').setAttribute('class', 'active');

B). $('ul li').add('active');

C). $('ul li').addClass('active');

D). $('ul li').setAttribute('class', 'active');

How to change the font family of all<p> elements to 'Arial' using jQuery?

A). $('p').style('font-family', 'Arial');

B). $('p').fontFamily('Arial');

C). $('p').css('font-family', 'Arial');

D). $('p').font('Arial');

How to change the font color of all <span> elements to blue using jQuery?

A). $('span').fontColor('blue');

B). $('span').color('blue');

C). $('span').css('color', 'blue');

D). $('span').style('color', 'blue');

How to change the color of all paragraphs to red using jQuery?

A). $('p').style('color', 'red');

B). $('p').css('color', 'red');

C). $('p').color('red');

D). $('p').setColor('red');

Which jQuery method is used to change the width of all <div> elements to 300 pixels?

A). $('div').width('300px');

B). $('div').setWidth('300px');

C). $('div').css('width', '300px');

D). $('div').style('width', '300px');

How to change the alt attribute of all <img> elements to 'New Image' using jQuery?

A). $('img').alt('New Image');

B). $('img').setAttribute('alt', 'New Image');

C). $('img').attr('alt', 'New Image');

D). $('img').setAttr('alt', 'New Image');